In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads() When a… (CVE-2026-53352)
A race condition in the Linux kernel's signal handling was resolved involving the clearing of job control flags in multi-threaded processes during execve(). The flaw caused stale job control flags to remain set on the calling thread after other threads were killed, leading to kernel warnings and potential instability. The fix ensures that the calling thread's job control flags are cleared properly to prevent this issue.
AI Analysis
Technical Summary
This vulnerability in the Linux kernel involves improper clearing of job control flags (JOBCTL_PENDING_MASK) for the calling thread in zap_other_threads() during execve() in multi-threaded processes receiving stop signals. The race condition leads to stale flags causing a warning when the thread returns to user mode and attempts to participate in group stop handling, decrementing an already zero group stop count. The fix clears the job control flags for the calling thread, aligning with other thread group teardown functions and preventing the race condition.
Potential Impact
The vulnerability causes kernel warnings and potential instability due to incorrect handling of job control flags in multi-threaded processes during execve(). It does not impact confidentiality or integrity but can cause availability issues (kernel warnings and possible crashes) due to the race condition.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, monitoring for kernel warnings related to task_participate_group_stop may help detect attempts to trigger this condition.
In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads() When a… (CVE-2026-53352)
Description
A race condition in the Linux kernel's signal handling was resolved involving the clearing of job control flags in multi-threaded processes during execve(). The flaw caused stale job control flags to remain set on the calling thread after other threads were killed, leading to kernel warnings and potential instability. The fix ensures that the calling thread's job control flags are cleared properly to prevent this issue.
CVSS v3.1
Score 4.7medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in the Linux kernel involves improper clearing of job control flags (JOBCTL_PENDING_MASK) for the calling thread in zap_other_threads() during execve() in multi-threaded processes receiving stop signals. The race condition leads to stale flags causing a warning when the thread returns to user mode and attempts to participate in group stop handling, decrementing an already zero group stop count. The fix clears the job control flags for the calling thread, aligning with other thread group teardown functions and preventing the race condition.
Potential Impact
The vulnerability causes kernel warnings and potential instability due to incorrect handling of job control flags in multi-threaded processes during execve(). It does not impact confidentiality or integrity but can cause availability issues (kernel warnings and possible crashes) due to the race condition.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, monitoring for kernel warnings related to task_participate_group_stop may help detect attempts to trigger this condition.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-hcpv-6hqv-vmx5
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-53352"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a6150e99c2644c7f8da2315
Added to database: 07/22/2026, 23:23:21 UTC
Last enriched: 07/22/2026, 23:38:28 UTC
Last updated: 07/31/2026, 19:24:49 UTC
Views: 9
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