signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()
In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads() When a multi-threaded process receives a stop signal (e.g., SIGSTOP), do_signal_stop() sets JOBCTL_STOP_PENDING and JOBCTL_STOP_CONSUME on all threads and sets signal->group_stop_count to the number of threads. If one of the threads concurrently calls execve(), de_thread() invokes zap_other_threads() to kill all other threads. zap_other_threads() aborts the pending group stop by resetting signal->group_stop_count to 0 and clears the JOBCTL_PENDING_MASK for all other threads. However, it fails to clear the job control flags for the calling thread. When execve() completes, the calling thread returns to user mode and checks for pending signals. Seeing the stale JOBCTL_STOP_PENDING flag, it calls do_signal_stop(), which invokes task_participate_group_stop(). Since JOBCTL_STOP_CONSUME is still set, it attempts to decrement the already-zero signal->group_stop_count, triggering a warning: sig->group_stop_count == 0 WARNING: CPU: 1 PID: 6475 at kernel/signal.c:373 task_participate_group_stop+0x215/0x2d0 Call Trace: do_signal_stop+0x3be/0x5c0 kernel/signal.c:2619 get_signal+0xa8c/0x1330 kernel/signal.c:2884 arch_do_signal_or_restart+0xbc/0x840 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x8c/0x4d0 kernel/entry/common.c:98 do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f Fix this race condition
CVE-2026-53352
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-53352
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "39efa3ef3a376a4e53de2f82fc91182459d34200",
"lessThan": "2b32b2fb241435145ea199efac024540759d2495",
"versionType": "git"
},
{
"status": "affected",
"version": "39efa3ef3a376a4e53de2f82fc91182459d34200",
"lessThan": "391ebe74456a0f1d60b3ba4a8a64d9f44c1728fe",
"versionType": "git"
},
{
"status": "affected",
"version": "39efa3ef3a376a4e53de2f82fc91182459d34200",
"lessThan": "f8d720bc2e35d568c18be0644e92a468de428370",
"versionType": "git"
},
{
"status": "affected",
"version": "39efa3ef3a376a4e53de2f82fc91182459d34200",
"lessThan": "f4aae11abb449dc536269705d0419ec69480faa9",
"versionType": "git"
},
{
"status": "affected",
"version": "39efa3ef3a376a4e53de2f82fc91182459d34200",
"lessThan": "76aebd9ef20078719dfd6282d3b06c27e900a65a",
"versionType": "git"
},
{
"status": "affected",
"version": "39efa3ef3a376a4e53de2f82fc91182459d34200",
"lessThan": "8c046f36222c6ce1e0daef2c45c891c72602f8a1",
"versionType": "git"
},
{
"status": "affected",
"version": "39efa3ef3a376a4e53de2f82fc91182459d34200",
"lessThan": "dfcd0ba14769d94d76ac9d9814b85e7fcacd4e29",
"versionType": "git"
},
{
"status": "affected",
"version": "39efa3ef3a376a4e53de2f82fc91182459d34200",
"lessThan": "90918794a4e2c3b440f8fcf3847765a8b1d81b25",
"versionType": "git"
}
],
"programFiles": [
"kernel/signal.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.94",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.36",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.13",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/signal.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53352
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28453 · Revision 1
- Added to Heist Feed
- Publisher date