Expired Pointer Dereference The advisory has been revoked - it doesn't affect any version of package perf (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-PERF-20919133
- published14 Oct 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
CVE-2026-90317 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
bpf: Invalidate RCU pointers after final spin unlock
In a sleepable BPF program, a spin lock can provide the only RCU protection for a kptr. The final bpf_spin_unlock() ends that protection, but the verifier leaves the pointer valid. Another CPU can then free the object before the pointer is used. A capability-limited runtime PoC triggered a task_struct use-after-free in __bpf_get_task_stack().
Record whether the program is in an RCU-protected context before releasing the lock. Invalidate RCU-protected pointers only when the unlock leaves the final such context. This preserves valid pointers in non-sleepable programs and inside an explicit RCU read-side section.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2536167
- https://access.redhat.com/security/cve/CVE-2026-90317
- https://git.kernel.org/stable/c/180c7000712db77063b3a26f4c97e7dd9038f449
- https://git.kernel.org/stable/c/7ae71629357d0a6d0bdadb929c7b296d5b7e61c2
- https://git.kernel.org/stable/c/f81972b235f3ebfa40bdce8bcfee3f242fb24065