Expired Pointer Dereference The advisory has been revoked - it doesn't affect any version of package libperf (opens in a new tab)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-LIBPERF-13971197
- published14 Nov 2025
- disclosed12 Nov 2025
Introduced: 12 Nov 2025
CVE-2025-40133 (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 libperf package and not the libperf package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().
mptcp_active_enable() is called from subflow_finish_connect(), which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not always under RCU.
Using sk_dst_get(sk)->dev could trigger UAF.
Let's use __sk_dst_get() and dst_dev_rcu().
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2414465
- https://access.redhat.com/security/cve/CVE-2025-40133
- https://access.redhat.com/errata/RHSA-2026:1727
- https://access.redhat.com/errata/RHSA-2026:2282
- https://git.kernel.org/stable/c/893c49a78d9f85e4b8081b908fb7c407d018106a
- https://git.kernel.org/stable/c/ad16235c9d3ef7ec17c109ff39b7504f49d17072
- https://git.kernel.org/stable/c/cc976ec9e38bb79409de3261ba1dbb6868e2a53e