CVE-2026-31555Medium· 5.5▾ SunlitA flaw was found in the Linux kernel. A local user could exploit a race condition within the `futex_lock_pi()` retry path. This vulnerability occurs because a stale pointer to an exiting process is not cleared, leading to a kernel warning.…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.1%
Last analysed / modified upstream
— → 5.5
none → medium
A flaw was found in the Linux kernel. A local user could exploit a race condition within the futex_lock_pi() retry path. This vulnerability occurs because a stale pointer to an exiting process is not cleared, leading to a kernel warning. Successful exploitation of this flaw could result in a system crash, causing a Denial of Service (DoS).
kernel: futex: Clear stale exiting pointer in futex_lock_pi() retry path — rated Moderate by Red Hat. Released 2026-04-24, updated 2026-09-15.
Affected:
Fixed:
No fix planned:
Not affected:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
The system must be rebooted for this update to take effect.
Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture.
Because of this proactive approach, a patch may be associa… https://access.redhat.com/errata/RHSA-2026:51035
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-52977Medium· 5.5In the Linux kernel, the following vulnerability has been resolved: futex: Prevent lockup in requeue-PI during signal/ timeout wakeup During wait-requeue-pi (task A) and requeue-PI (task B) the following race can happen: Task A …
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