CVE-2026-64370
posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path
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Description
In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path In do_cpu_nanosleep(), posix_cpu_timer_create() takes a pid reference via get_pid() and stores it in timer.it.cpu.pid. If the subsequent posix_cpu_timer_set() call fails, the function returns immediately without calling posix_cpu_timer_del() to release the pid reference, causing a leak. Fix it by calling posix_cpu_timer_del() before the unlock-and-return on the error path, consistent with the other exit paths in the same function.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/afed3cdc1cca133f804fcf57ff228974f424b23a
- https://git.kernel.org/stable/c/8a270b1258797f61b61da44f8bfd41a581b5c85b
- https://git.kernel.org/stable/c/d605d00085adc3fddf67de01dc2a44aebf1a3fb5
- https://git.kernel.org/stable/c/e5ffc638faf5dc7d9dc85c9a95e10bf97442e0c0
- https://git.kernel.org/stable/c/eb4cec29a78334d09bcfb41c0660cdd62ba05843
References (10)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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