Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package perf (opens in a new tab)

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Proof of Concept

0.53% (42^nd percentile)

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Snyk IDSNYK-RHEL10-PERF-17352354
published17 Jun 2026
disclosed18 May 2026

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Introduced: 18 May 2026

CVE-2026-46331 (opens in a new tab) CWE-787 (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:

net/sched: fix pedit partial COW leading to page cache corruption

tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd.

Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.