π¨ CVE-2026-79758
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 1.8.0 until 2.5.1, authenticated Termix users can access the server-stats API without per-host authorization. GET /status returns statuses for hosts the requester cannot access, GET /status/:id accepts an attacker-supplied numeric host identifier, and POST /clear-connections permits a regular user to clear the global SSH connection pool. The affected src/backend/ssh/server-stats.ts routes expose host online or offline state and lastChecked timestamps and can disrupt other users' active sessions or pooled connections. Unauthenticated requests remain blocked, but authentication alone does not preserve tenant isolation. This issue is fixed in version 2.5.1.
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Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 1.8.0 until 2.5.1, authenticated Termix users can access the server-stats API without per-host authorization. GET /status returns statuses for hosts the requester cannot access, GET /status/:id accepts an attacker-supplied numeric host identifier, and POST /clear-connections permits a regular user to clear the global SSH connection pool. The affected src/backend/ssh/server-stats.ts routes expose host online or offline state and lastChecked timestamps and can disrupt other users' active sessions or pooled connections. Unauthenticated requests remain blocked, but authentication alone does not preserve tenant isolation. This issue is fixed in version 2.5.1.
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GitHub
release-2.5.1 (#1067) Β· Termix-SSH/Termix@ddbdd5c
* chore(deps): bump node from 24-slim to 26-slim in /docker in the docker-major-updates group (#1021)
* chore: fix release workflow to merge docs branch
* fix: svg donation generator push fail
*...
* chore: fix release workflow to merge docs branch
* fix: svg donation generator push fail
*...
π¨ CVE-2026-79759
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 1.7.0 until 2.5.1, the POST /credentials/:id/deploy-to-host endpoint resolves credential and target-host records from attacker-controlled credentialId and targetHostId integer values without checking that either record belongs to the requesting user. In src/backend/database/routes/credentials.ts, differential errors reveal whether credential and host records exist and disclose each record's authType value. Properly encrypted passwords and keys are not disclosed, but a key-authenticated victim host can receive an outbound SSH connection attempt using the attacker's public key. This issue is fixed in version 2.5.1.
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Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 1.7.0 until 2.5.1, the POST /credentials/:id/deploy-to-host endpoint resolves credential and target-host records from attacker-controlled credentialId and targetHostId integer values without checking that either record belongs to the requesting user. In src/backend/database/routes/credentials.ts, differential errors reveal whether credential and host records exist and disclose each record's authType value. Properly encrypted passwords and keys are not disclosed, but a key-authenticated victim host can receive an outbound SSH connection attempt using the attacker's public key. This issue is fixed in version 2.5.1.
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GitHub
Merge commit from fork Β· Termix-SSH/Termix@b059829
Self-hosted SSH and remote desktop management. Contribute to Termix-SSH/Termix development by creating an account on GitHub.
π¨ CVE-2026-79760
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 2.5.0 until 2.5.1, Termix allows authenticated users to configure webhook or ntfy notification channels with attacker-controlled destination URLs and trigger server-side requests through the notification-channel test endpoint. The request path in src/backend/database/routes/alert-rules-routes.ts reaches src/backend/utils/notification-sender.ts without destination allowlisting or private-address blocking. This permits blind requests to internal HTTP services reachable by the Termix server. Webhook mode also permits attacker-controlled HTTP methods and headers, which can cause limited state changes when an internal service accepts the fixed notification body, although response bodies are not returned. This issue is fixed in version 2.5.1.
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Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 2.5.0 until 2.5.1, Termix allows authenticated users to configure webhook or ntfy notification channels with attacker-controlled destination URLs and trigger server-side requests through the notification-channel test endpoint. The request path in src/backend/database/routes/alert-rules-routes.ts reaches src/backend/utils/notification-sender.ts without destination allowlisting or private-address blocking. This permits blind requests to internal HTTP services reachable by the Termix server. Webhook mode also permits attacker-controlled HTTP methods and headers, which can cause limited state changes when an internal service accepts the fixed notification body, although response bodies are not returned. This issue is fixed in version 2.5.1.
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GitHub
release-2.5.1 (#1067) Β· Termix-SSH/Termix@ddbdd5c
* chore(deps): bump node from 24-slim to 26-slim in /docker in the docker-major-updates group (#1021)
* chore: fix release workflow to merge docs branch
* fix: svg donation generator push fail
*...
* chore: fix release workflow to merge docs branch
* fix: svg donation generator push fail
*...
π¨ CVE-2026-79761
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 1.7.0 until 2.5.1, the Termix SSH key deployment flow derives a grep pattern from a user-controlled public-key token and interpolates it into double-quoted shell commands executed on the selected target host. In src/backend/database/routes/credential-deploy-routes.ts, both grep -F verification paths accept command substitution or quote-breaking shell syntax in keyPattern. An authenticated user who can deploy a crafted SSH credential can therefore execute commands with the selected remote account's privileges. The separate ACME command-injection report is outside this CVE's scope. This issue is fixed in version 2.5.1.
π@cveNotify
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 1.7.0 until 2.5.1, the Termix SSH key deployment flow derives a grep pattern from a user-controlled public-key token and interpolates it into double-quoted shell commands executed on the selected target host. In src/backend/database/routes/credential-deploy-routes.ts, both grep -F verification paths accept command substitution or quote-breaking shell syntax in keyPattern. An authenticated user who can deploy a crafted SSH credential can therefore execute commands with the selected remote account's privileges. The separate ACME command-injection report is outside this CVE's scope. This issue is fixed in version 2.5.1.
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GitHub
release-2.5.1 (#1067) Β· Termix-SSH/Termix@ddbdd5c
* chore(deps): bump node from 24-slim to 26-slim in /docker in the docker-major-updates group (#1021)
* chore: fix release workflow to merge docs branch
* fix: svg donation generator push fail
*...
* chore: fix release workflow to merge docs branch
* fix: svg donation generator push fail
*...
π¨ CVE-2026-88355
An incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof(te_expr) but treats the returned allocation as a complete te_expr object. This results in undefined behavior and can cause deterministic process termination in UBSan-instrumented builds.
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An incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof(te_expr) but treats the returned allocation as a complete te_expr object. This results in undefined behavior and can cause deterministic process termination in UBSan-instrumented builds.
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GitHub
[Bug]undersized heap allocation for arity-0 expression nodes in new_expr() β UBSAN object-size violation on any valid expressionβ¦
Summary new_expr() computes the heap size of an AST node as (sizeof(te_expr) - sizeof(void*)) + one pointer per argument (psize) + one extra pointer for closures. For nodes that take no arguments β...
π¨ CVE-2026-88357
nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization code. Specially crafted network input can cause byte-buffer addresses at odd offsets to be cast to uint16_t or wider integer pointers and directly dereferenced without alignment checks. This results in undefined behavior and can cause process termination in UBSan-instrumented builds or on strict-alignment architectures, leading to denial of service.
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nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization code. Specially crafted network input can cause byte-buffer addresses at odd offsets to be cast to uint16_t or wider integer pointers and directly dereferenced without alignment checks. This results in undefined behavior and can cause process termination in UBSan-instrumented builds or on strict-alignment architectures, leading to denial of service.
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GitHub
UBSan "Type mismatch in operation" trap (SIGILL) on unaligned pointer-cast reads (DNS get16, ndpi_serializer) Β· Issue #3213 Β· ntop/nDPI
Describe the bug nDPI performs 16/32-bit field reads by casting a byte pointer directly and dereferencing it (*(u_int16_t*)&payload[*i] / ntohs(*((u_int16_t *)&buf[offset]))). When the byte...
π¨ CVE-2026-88358
simdjson 4.6.1 contains a one-byte out-of-bounds read vulnerability in dom::parser::parse_unpadded(). A specially crafted truncated JSON document whose final structural token closes a nested array or object can cause json_iterator::walk_document() to access buf[len] after the input buffer has been exhausted. This results in a heap out-of-bounds read and may cause application termination, leading to denial of service.
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simdjson 4.6.1 contains a one-byte out-of-bounds read vulnerability in dom::parser::parse_unpadded(). A specially crafted truncated JSON document whose final structural token closes a nested array or object can cause json_iterator::walk_document() to access buf[len] after the input buffer has been exhausted. This results in a heap out-of-bounds read and may cause application termination, leading to denial of service.
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GitHub
fix: prevent parse_unpadded 1-byte OOB on truncated nested JSON (#2817) Β· simdjson/simdjson@20b2871
* fix: prevent parse_unpadded 1-byte OOB on truncated nested JSON
Stage 1 plants a sentinel structural index equal to `len` after the last
real structural. On the padded path, reading buf[len] is ...
Stage 1 plants a sentinel structural index equal to `len` after the last
real structural. On the padded path, reading buf[len] is ...
π¨ CVE-2026-88361
SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.
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SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.
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GitHub
fix signed integer overflow parsing PDF PageLabels /Nums key (fixes #β¦ Β· chenjiefeng2001/sumatrapdf_folked@b22a8c7
β¦5952)
An attacker-controlled /PageLabels /Nums key of INT_MAX made
pdf_to_int(...) + 1 overflow a signed int (UB), trapping as SIGILL on
UBSan builds. Compute startAt in i64 and skip out-of-range...
An attacker-controlled /PageLabels /Nums key of INT_MAX made
pdf_to_int(...) + 1 overflow a signed int (UB), trapping as SIGILL on
UBSan builds. Compute startAt in i64 and skip out-of-range...
π¨ CVE-2026-88362
MuJS e892c9fdb contains an incorrect numeric conversion vulnerability in jsR_isindex() in jsrun.c. A specially crafted JavaScript input containing an excessively large numeric array index can cause an out-of-range floating-point value to be converted to an integer without proper range validation. This results in undefined behavior and can cause process termination, leading to denial of service.
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MuJS e892c9fdb contains an incorrect numeric conversion vulnerability in jsR_isindex() in jsrun.c. A specially crafted JavaScript input containing an excessively large numeric array index can cause an out-of-range floating-point value to be converted to an integer without proper range validation. This results in undefined behavior and can cause process termination, leading to denial of service.
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π¨ CVE-2026-88365
minimp3 commit ea99364f contains an integer overflow vulnerability in mp3dec_skip_id3v1() when parsing the APEv2 tag-size field.
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minimp3 commit ea99364f contains an integer overflow vulnerability in mp3dec_skip_id3v1() when parsing the APEv2 tag-size field.
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GitHub
[Bug]signed left-shift overflow in mp3dec_skip_id3v1 when parsing the APEv2 tag-size field (CWE-190) Β· Issue #151 Β· lieff/minimp3
Summary To skip a trailing APEv2 tag, mp3dec_skip_id3v1 inspects the last 32 bytes of the input: after verifying the 8-byte APETAGEX magic it reads the 4-byte tag-size field and reconstructs the 32...
π¨ CVE-2026-88368
NanoSVG commit 239e102ec contains an incorrect numeric conversion vulnerability in the rasterizer's nsvg__addActive() function. A specially crafted SVG document containing sufficiently large geometry coordinates can cause fixed-point-scaled edge coordinates to exceed the range representable by int. The rasterizer subsequently converts these values to int without range validation, resulting in undefined behavior and possible process termination, leading to denial of service.
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NanoSVG commit 239e102ec contains an incorrect numeric conversion vulnerability in the rasterizer's nsvg__addActive() function. A specially crafted SVG document containing sufficiently large geometry coordinates can cause fixed-point-scaled edge coordinates to exceed the range representable by int. The rasterizer subsequently converts these values to int without range validation, resulting in undefined behavior and possible process termination, leading to denial of service.
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GitHub
[Bug]rasterizer active-edge fixed-point coordinate overflow: (int) cast of NSVGFIX-scaled edge coordinates in nsvgaddActive (CWEβ¦
Summary When nsvgRasterize converts parsed geometry into the internal 10.6 fixed-point representation (NSVG__FIX = 1024), it casts the scaled coordinates directly to a 32-bit int. The two conversio...
π¨ CVE-2026-88369
zserge jsmn commit 25647e6 is vulnerable to Buffer Overflow in example/jsondump.c dump().
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zserge jsmn commit 25647e6 is vulnerable to Buffer Overflow in example/jsondump.c dump().
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GitHub
[Bug]global-buffer-overflow in dump() (example/jsondump.c): non-strict grammar emits a token tree that violates jsmn's own tokenβ¦
Summary jsmn_parse (non-strict grammar) can emit a token tree that violates jsmn's own invariant that only OBJECT/ARRAY tokens have size > 0. The shipped example example/jsondump.c's dum...
π¨ CVE-2026-88370
libconfini 1.16.4 contains a heap out-of-bounds write condition involving the bundled load_ini_buffer.h utility and strip_ini_cache(). The bundled utility allocates exactly ini_length bytes, while strip_ini_cache() unconditionally writes a NUL terminator at ini_source[ini_length], requiring an additional writable byte. Applications using the bundled allocation pattern can trigger deterministic heap memory corruption when processing any non-empty INI input, resulting in denial of service.
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libconfini 1.16.4 contains a heap out-of-bounds write condition involving the bundled load_ini_buffer.h utility and strip_ini_cache(). The bundled utility allocates exactly ini_length bytes, while strip_ini_cache() unconditionally writes a NUL terminator at ini_source[ini_length], requiring an additional writable byte. Applications using the bundled allocation pattern can trigger deterministic heap memory corruption when processing any non-empty INI input, resulting in denial of service.
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GitHub
[Bug]heap-buffer-overflow in strip_ini_cache: unconditional ini_source[ini_length] = '\0' write contradicts bundled example (CWEβ¦
Summary strip_ini_cache() unconditionally executes ini_source[ini_length] = '\0' as its first statement (src/confini.c:2621), before any bounds check. The function's own docblock (src/c...
π¨ CVE-2026-88371
ZBar commit 2ea2ca58 contains an undefined-behavior vulnerability in the Code 128 decode6() function. When processing specially crafted Code 128 input, decode_e() can return -1 for an invalid edge pattern, and decode6() subsequently left-shifts this negative signed value while constructing the edge signature. The operation invokes undefined behavior and can terminate trap-mode UBSan builds with SIGILL, resulting in denial of service.
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ZBar commit 2ea2ca58 contains an undefined-behavior vulnerability in the Code 128 decode6() function. When processing specially crafted Code 128 input, decode_e() can return -1 for an invalid edge pattern, and decode6() subsequently left-shifts this negative signed value while constructing the edge signature. The operation invokes undefined behavior and can terminate trap-mode UBSan builds with SIGILL, resulting in denial of service.
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GitHub
[Bug]Code 128 decoder decode6 left-shifts a negative value β UBSAN UB / SIGILL (CWE-682) Β· Issue #336 Β· mchehab/zbar
Summary decode6() (zbar/decoder/code128.c:218) builds a Code 128 character "edge signature" sig by left-shifting the return values of decode_e(), e.g. decode_e(...) << 12. decode_e(...
π¨ CVE-2026-92680
Araxis Merge for Windows version 2011.4074 through 2026.0 stores user-configured credentials for remote servers in the Windows registry and does not apply sufficient cryptographic protection. An authenticated, non-administrative attacker could retrieve and unencrypt all credentials the target user has stored in Merge.
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Araxis Merge for Windows version 2011.4074 through 2026.0 stores user-configured credentials for remote servers in the Windows registry and does not apply sufficient cryptographic protection. An authenticated, non-administrative attacker could retrieve and unencrypt all credentials the target user has stored in Merge.
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GitHub
GitHub - grepstrength/CVE-2026-92680
Contribute to grepstrength/CVE-2026-92680 development by creating an account on GitHub.
π¨ CVE-2026-93205
In the Linux kernel, the following vulnerability has been resolved:
iommu/arm-smmu-v3: Manage teardown with devm
arm_smmu_device_remove() manually frees the IOPF queue, destroys the
vmid_map and disables the device, while the IRQs and queues are devm
managed. devm unwinds only after remove() returns, so the cleanup runs
in the wrong order. The IOPF queue is freed before the event-queue IRQ
whose handler uses it.
Manage all of it with devm so the unwind order is correct. Free the IOPF
queue and vmid_map via devm actions, and disable the device from one
registered after arm_smmu_device_reset().
This is also a prerequisite for fixing a Tegra241 CMDQV CMD_SYNC
use-after-free in the subsequent patch.
π@cveNotify
In the Linux kernel, the following vulnerability has been resolved:
iommu/arm-smmu-v3: Manage teardown with devm
arm_smmu_device_remove() manually frees the IOPF queue, destroys the
vmid_map and disables the device, while the IRQs and queues are devm
managed. devm unwinds only after remove() returns, so the cleanup runs
in the wrong order. The IOPF queue is freed before the event-queue IRQ
whose handler uses it.
Manage all of it with devm so the unwind order is correct. Free the IOPF
queue and vmid_map via devm actions, and disable the device from one
registered after arm_smmu_device_reset().
This is also a prerequisite for fixing a Tegra241 CMDQV CMD_SYNC
use-after-free in the subsequent patch.
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π¨ CVE-2026-93206
In the Linux kernel, the following vulnerability has been resolved:
PCI/proc: Use file_ns_capable() when checking config space read access
proc_bus_pci_read() decides how much of the config space is readable based
on capable(CAP_SYS_ADMIN), which checks the credentials of the task calling
read(), not the credentials of the process that opened the file.
The sysfs equivalent, pci_read_config(), has checked the credentials of the
opening process since commit de139a339395 ("pci: check caps from sysfs file
open to read device dependent config space"), so a privileged process can
open the config space file and pass the file descriptor to an unprivileged
process (for example, a process running a KVM guest with an assigned
device), which can then read the entire config space. The check was
subsequently routed through the LSM framework in commit 47970b1b2aa6 ("pci:
use security_capable() when checking capablities during config space read")
and converted to the dedicated helper in commit ab0fa82b2df9 ("pci-sysfs:
use proper file capability helper function").
Thus, the two interfaces check the same capability against different
credentials. Checking the credentials of the task calling read() makes the
outcome depend on who reads rather than who opened, so the restriction is
bypassed whenever a more privileged process reads through the descriptor.
Checking the credentials recorded in file->f_cred settles the decision at
open() time and ties it to the file, where it cannot change with the
caller.
Use file_ns_capable() to check CAP_SYS_ADMIN against the credentials in
effect when the file was opened, bringing the procfs interface in line with
the sysfs behaviour.
As a result, a file descriptor opened by a privileged process and passed to
an unprivileged one now allows the entire config space to be read through
procfs, matching sysfs.
π@cveNotify
In the Linux kernel, the following vulnerability has been resolved:
PCI/proc: Use file_ns_capable() when checking config space read access
proc_bus_pci_read() decides how much of the config space is readable based
on capable(CAP_SYS_ADMIN), which checks the credentials of the task calling
read(), not the credentials of the process that opened the file.
The sysfs equivalent, pci_read_config(), has checked the credentials of the
opening process since commit de139a339395 ("pci: check caps from sysfs file
open to read device dependent config space"), so a privileged process can
open the config space file and pass the file descriptor to an unprivileged
process (for example, a process running a KVM guest with an assigned
device), which can then read the entire config space. The check was
subsequently routed through the LSM framework in commit 47970b1b2aa6 ("pci:
use security_capable() when checking capablities during config space read")
and converted to the dedicated helper in commit ab0fa82b2df9 ("pci-sysfs:
use proper file capability helper function").
Thus, the two interfaces check the same capability against different
credentials. Checking the credentials of the task calling read() makes the
outcome depend on who reads rather than who opened, so the restriction is
bypassed whenever a more privileged process reads through the descriptor.
Checking the credentials recorded in file->f_cred settles the decision at
open() time and ties it to the file, where it cannot change with the
caller.
Use file_ns_capable() to check CAP_SYS_ADMIN against the credentials in
effect when the file was opened, bringing the procfs interface in line with
the sysfs behaviour.
As a result, a file descriptor opened by a privileged process and passed to
an unprivileged one now allows the entire config space to be read through
procfs, matching sysfs.
π@cveNotify
π¨ CVE-2026-93207
In the Linux kernel, the following vulnerability has been resolved:
SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
svcauth_gss_decode_credbody() writes the caller's
rpc_gss_wire_cred field by field and assigns gc_ctx.len only on
the success tail. The caller storage is svcdata->clcred, which
lives in the per-svc_rqst gss_svc_data and is reused across
requests. Early decode failures leave partially decoded state
mixed with residue from the prior request.
The trailing body_len tightness check is the sharpest case:
xdr_stream_decode_opaque_inline() has already written gc_ctx.data
with a borrowed inline pointer into the current request's XDR
pages, but gc_ctx.len retains its prior value. Once the request
pages are released the pooled clcred carries a dangling pointer
paired with a stale length.
Zero the caller's rpc_gss_wire_cred at function entry so that
every early-return path leaves a deterministic all-zero cred.
On the trailing tightness-check path, gc_ctx.len is now zero
instead of stale, which neuters length-driven consumers such as
gss_svc_searchbyctx() that would otherwise walk the dangling
data pointer.
π@cveNotify
In the Linux kernel, the following vulnerability has been resolved:
SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
svcauth_gss_decode_credbody() writes the caller's
rpc_gss_wire_cred field by field and assigns gc_ctx.len only on
the success tail. The caller storage is svcdata->clcred, which
lives in the per-svc_rqst gss_svc_data and is reused across
requests. Early decode failures leave partially decoded state
mixed with residue from the prior request.
The trailing body_len tightness check is the sharpest case:
xdr_stream_decode_opaque_inline() has already written gc_ctx.data
with a borrowed inline pointer into the current request's XDR
pages, but gc_ctx.len retains its prior value. Once the request
pages are released the pooled clcred carries a dangling pointer
paired with a stale length.
Zero the caller's rpc_gss_wire_cred at function entry so that
every early-return path leaves a deterministic all-zero cred.
On the trailing tightness-check path, gc_ctx.len is now zero
instead of stale, which neuters length-driven consumers such as
gss_svc_searchbyctx() that would otherwise walk the dangling
data pointer.
π@cveNotify
π¨ CVE-2026-93208
In the Linux kernel, the following vulnerability has been resolved:
kasan: fix cache shrink race with CPU hotplug
kasan_quarantine_remove_cache() first invokes per_cpu_remove_cache() on
all online CPUs. Each callback moves objects belonging to the cache from
cpu_quarantine to the CPU's shrink_qlist, where they can later be freed
from task context.
kmem_cache_destroy() invokes the quarantine removal path while holding
cpus_read_lock(), but kmem_cache_shrink() does not. The latter can
therefore race with CPU offlining as follows:
kmem_cache_shrink() CPU hotplug
------------------- -----------
on_each_cpu()
CPU1 moves objects to
CPU1's shrink_qlist
on_each_cpu() returns
CPU1 goes offline
kasan_cpu_offline()
drains cpu_quarantine
leaves shrink_qlist untouched
for_each_online_cpu()
skips CPU1
The objects left on CPU1's shrink_qlist are not returned to the slab
allocator. This may prevent kmem_cache_shrink() from releasing slabs that
would otherwise become empty. If CPU1 remains offline, a later
kmem_cache_destroy() also skips the list and can report that the cache
still contains objects.
An intermittent occurrence was observed with a virtio-9p filesystem. The
mount and umount commands both returned 0, but the kernel logged the
following during the userspace-triggered teardown:
[ 2994.380134][ T111] BUG 9p-fcall-cache-1 (Tainted: G B ): Objects remaining on __kmem_cache_shutdown()
[ 2994.381140][ T111] Object 0xff11000004361118 @offset=4376
[ 2994.381607][ T111] Allocated in p9_fcall_init+0x201/0x400 age=19564 cpu=1 pid=104
[ 2994.382591][ T111] p9_fcall_init+0x201/0x400
[ 2994.382810][ T111] p9_tag_alloc+0x12f/0x700
[ 2994.382982][ T111] p9_client_prepare_req+0x102/0x3e0
[ 2994.383165][ T111] p9_client_rpc+0x1ab/0xa50
[ 2994.383334][ T111] p9_client_getattr_dotl+0xb0/0x1a0
[ 2994.383515][ T111] v9fs_vfs_getattr_dotl+0x115/0x360
[ 2994.383719][ T111] vfs_getattr_nosec+0x22c/0x3a0
[ 2994.383910][ T111] vfs_statx+0xd7/0x170
[ 2994.384062][ T111] vfs_fstatat+0x45/0x80
[ 2994.384215][ T111] __do_sys_newfstatat+0x84/0xe0
[ 2994.384386][ T111] do_syscall_64+0x115/0x6a0
[ 2994.384566][ T111] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 2994.399720][ T111] WARNING: mm/slub.c:1244 at __kmem_cache_shutdown+0x363/0x500, CPU#0: busybox/111
[ 2994.405655][ T111] Call Trace:
[ 2994.406325][ T111] kmem_cache_destroy+0x73/0x1b0
[ 2994.406630][ T111] p9_client_destroy+0x271/0x3c0
[ 2994.407210][ T111] v9fs_session_close+0x3c/0x260
[ 2994.407409][ T111] v9fs_kill_super+0x48/0x90
[ 2994.407584][ T111] deactivate_locked_super+0xa3/0x160
[ 2994.407778][ T111] cleanup_mnt+0x1dd/0x3e0
Thus, a successful umount left objects in the 9p fcall cache and prevented
the cache from being destroyed cleanly.
Per-CPU shrink_qlist storage exists for every possible CPU, and each list
is protected by its own raw spinlock. Iterate over possible CPUs so that
a list populated before its CPU went offline is drained as well.
for_each_possible_cpu() can do more work than for_each_online_cpu(), but
this change only affects CONFIG_KASAN_GENERIC kernels. The extra work is
limited to cache shrink and cache destruction paths and does not affect
the normal allocation/free fast path. It adds one raw-spinlock-protected
scan of each possible CPU's shrink list. These lists are normally empty;
a non-empty list is traversed to remove objects belonging to the cache
being shrunk or destroyed.
π@cveNotify
In the Linux kernel, the following vulnerability has been resolved:
kasan: fix cache shrink race with CPU hotplug
kasan_quarantine_remove_cache() first invokes per_cpu_remove_cache() on
all online CPUs. Each callback moves objects belonging to the cache from
cpu_quarantine to the CPU's shrink_qlist, where they can later be freed
from task context.
kmem_cache_destroy() invokes the quarantine removal path while holding
cpus_read_lock(), but kmem_cache_shrink() does not. The latter can
therefore race with CPU offlining as follows:
kmem_cache_shrink() CPU hotplug
------------------- -----------
on_each_cpu()
CPU1 moves objects to
CPU1's shrink_qlist
on_each_cpu() returns
CPU1 goes offline
kasan_cpu_offline()
drains cpu_quarantine
leaves shrink_qlist untouched
for_each_online_cpu()
skips CPU1
The objects left on CPU1's shrink_qlist are not returned to the slab
allocator. This may prevent kmem_cache_shrink() from releasing slabs that
would otherwise become empty. If CPU1 remains offline, a later
kmem_cache_destroy() also skips the list and can report that the cache
still contains objects.
An intermittent occurrence was observed with a virtio-9p filesystem. The
mount and umount commands both returned 0, but the kernel logged the
following during the userspace-triggered teardown:
[ 2994.380134][ T111] BUG 9p-fcall-cache-1 (Tainted: G B ): Objects remaining on __kmem_cache_shutdown()
[ 2994.381140][ T111] Object 0xff11000004361118 @offset=4376
[ 2994.381607][ T111] Allocated in p9_fcall_init+0x201/0x400 age=19564 cpu=1 pid=104
[ 2994.382591][ T111] p9_fcall_init+0x201/0x400
[ 2994.382810][ T111] p9_tag_alloc+0x12f/0x700
[ 2994.382982][ T111] p9_client_prepare_req+0x102/0x3e0
[ 2994.383165][ T111] p9_client_rpc+0x1ab/0xa50
[ 2994.383334][ T111] p9_client_getattr_dotl+0xb0/0x1a0
[ 2994.383515][ T111] v9fs_vfs_getattr_dotl+0x115/0x360
[ 2994.383719][ T111] vfs_getattr_nosec+0x22c/0x3a0
[ 2994.383910][ T111] vfs_statx+0xd7/0x170
[ 2994.384062][ T111] vfs_fstatat+0x45/0x80
[ 2994.384215][ T111] __do_sys_newfstatat+0x84/0xe0
[ 2994.384386][ T111] do_syscall_64+0x115/0x6a0
[ 2994.384566][ T111] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 2994.399720][ T111] WARNING: mm/slub.c:1244 at __kmem_cache_shutdown+0x363/0x500, CPU#0: busybox/111
[ 2994.405655][ T111] Call Trace:
[ 2994.406325][ T111] kmem_cache_destroy+0x73/0x1b0
[ 2994.406630][ T111] p9_client_destroy+0x271/0x3c0
[ 2994.407210][ T111] v9fs_session_close+0x3c/0x260
[ 2994.407409][ T111] v9fs_kill_super+0x48/0x90
[ 2994.407584][ T111] deactivate_locked_super+0xa3/0x160
[ 2994.407778][ T111] cleanup_mnt+0x1dd/0x3e0
Thus, a successful umount left objects in the 9p fcall cache and prevented
the cache from being destroyed cleanly.
Per-CPU shrink_qlist storage exists for every possible CPU, and each list
is protected by its own raw spinlock. Iterate over possible CPUs so that
a list populated before its CPU went offline is drained as well.
for_each_possible_cpu() can do more work than for_each_online_cpu(), but
this change only affects CONFIG_KASAN_GENERIC kernels. The extra work is
limited to cache shrink and cache destruction paths and does not affect
the normal allocation/free fast path. It adds one raw-spinlock-protected
scan of each possible CPU's shrink list. These lists are normally empty;
a non-empty list is traversed to remove objects belonging to the cache
being shrunk or destroyed.
π@cveNotify
π¨ CVE-2026-93209
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_core: use skb_get() instead of skb_clone() for req_skb
BT enable fails intermittently with -ETIMEDOUT (-110). The kernel log
shows the HCI Read Local Version command was sent and the firmware
replied with status 0x00 (logged by hci_req_cmd_complete() BT_DBG),
but the waiter in __hci_cmd_sync_sk() never woke up and timed out
after 10 s:
bluetooth hci0: Opcode 0xfc00 // __hci_cmd_sync_sk
bluetooth hci0: opcode 0xfc00 plen 1 // hci_cmd_sync_add
bluetooth hci0: skb len 4 // hci_cmd_sync_alloc
bluetooth hci0: length 1 // hci_req_sync_run
Bluetooth: hci0 cmd_cnt 1 cmd queued 1 // hci_cmd_work
Bluetooth: hci0 type 1 len 4 // hci_send_frame
Bluetooth: opcode 0xfc00 status 0x00 // hci_req_cmd_complete
<-- req_skb NULL: req_complete_skb not set,
hci_cmd_sync_complete() never called,
req_status stays HCI_REQ_PEND -->
<-- 10 s later: wait_event_interruptible_timeout expires -->
bluetooth hci0: end: err -110 // __hci_cmd_sync_sk
The root cause is that hci_send_cmd_sync() clones the sent command
into hdev->req_skb so that hci_req_cmd_complete() can locate the
registered completion callback. Under memory pressure this
skb_clone() fails, leaving hdev->req_skb NULL. The firmware reply
is received and processed, but hci_req_cmd_complete() finds NULL
req_skb, so hci_cmd_sync_complete() is never called, req_status
stays HCI_REQ_PEND, and the waiter times out with -ETIMEDOUT.
req_skb is only used to read bt_cb(skb)->hci callbacks and opcode --
it is never modified. Replace skb_clone() with skb_get(), which
simply increments the reference count of hdev->sent_cmd without
allocating new memory and therefore cannot fail.
This issue was first observed as a use-after-free in ttyport_close()
when ttyport_open() failed, which was investigated in an earlier
patch series [1]. That investigation led to the discovery of the
true root cause described above.
[1] https://lore.kernel.org/all/20250430111617.1151390-1-quic_cxin@quicinc.com/
π@cveNotify
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_core: use skb_get() instead of skb_clone() for req_skb
BT enable fails intermittently with -ETIMEDOUT (-110). The kernel log
shows the HCI Read Local Version command was sent and the firmware
replied with status 0x00 (logged by hci_req_cmd_complete() BT_DBG),
but the waiter in __hci_cmd_sync_sk() never woke up and timed out
after 10 s:
bluetooth hci0: Opcode 0xfc00 // __hci_cmd_sync_sk
bluetooth hci0: opcode 0xfc00 plen 1 // hci_cmd_sync_add
bluetooth hci0: skb len 4 // hci_cmd_sync_alloc
bluetooth hci0: length 1 // hci_req_sync_run
Bluetooth: hci0 cmd_cnt 1 cmd queued 1 // hci_cmd_work
Bluetooth: hci0 type 1 len 4 // hci_send_frame
Bluetooth: opcode 0xfc00 status 0x00 // hci_req_cmd_complete
<-- req_skb NULL: req_complete_skb not set,
hci_cmd_sync_complete() never called,
req_status stays HCI_REQ_PEND -->
<-- 10 s later: wait_event_interruptible_timeout expires -->
bluetooth hci0: end: err -110 // __hci_cmd_sync_sk
The root cause is that hci_send_cmd_sync() clones the sent command
into hdev->req_skb so that hci_req_cmd_complete() can locate the
registered completion callback. Under memory pressure this
skb_clone() fails, leaving hdev->req_skb NULL. The firmware reply
is received and processed, but hci_req_cmd_complete() finds NULL
req_skb, so hci_cmd_sync_complete() is never called, req_status
stays HCI_REQ_PEND, and the waiter times out with -ETIMEDOUT.
req_skb is only used to read bt_cb(skb)->hci callbacks and opcode --
it is never modified. Replace skb_clone() with skb_get(), which
simply increments the reference count of hdev->sent_cmd without
allocating new memory and therefore cannot fail.
This issue was first observed as a use-after-free in ttyport_close()
when ttyport_open() failed, which was investigated in an earlier
patch series [1]. That investigation led to the discovery of the
true root cause described above.
[1] https://lore.kernel.org/all/20250430111617.1151390-1-quic_cxin@quicinc.com/
π@cveNotify
π¨ CVE-2026-93210
In the Linux kernel, the following vulnerability has been resolved:
smb: client: harden DFS cache against invalid target hints
Currently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is
NULL, and dfs_cache_noreq_update_tgthint() assumes ce->tgthint is always
valid.
In preparation for clearing ce->tgthint in free_tgts(), harden callers
of get_tgt_name() against ERR_PTR results and harden
dfs_cache_noreq_update_tgthint() against NULL pointer dereferences.
π@cveNotify
In the Linux kernel, the following vulnerability has been resolved:
smb: client: harden DFS cache against invalid target hints
Currently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is
NULL, and dfs_cache_noreq_update_tgthint() assumes ce->tgthint is always
valid.
In preparation for clearing ce->tgthint in free_tgts(), harden callers
of get_tgt_name() against ERR_PTR results and harden
dfs_cache_noreq_update_tgthint() against NULL pointer dereferences.
π@cveNotify