Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package kernel-modules-extra-matched (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-KERNELMODULESEXTRAMATCHED-17352250
- published17 Jun 2026
- disclosed18 May 2026
Introduced: 18 May 2026
CVE-2026-46331 (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 kernel-modules-extra-matched package and not the kernel-modules-extra-matched 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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2479492
- https://access.redhat.com/security/vulnerabilities/RHSB-2026-008
- https://access.redhat.com/security/cve/CVE-2026-46331
- https://access.redhat.com/errata/RHSA-2026:27288
- https://git.kernel.org/stable/c/899ee91156e57784090c5565e4f31bd7dbffbc5a
- https://git.kernel.org/stable/c/2bec122b9fb91507a758ab5e3e5c4fbe7cb3f61b
- https://git.kernel.org/stable/c/3dee9d0c198faeb95d052c1b94c2958751a28512
- https://git.kernel.org/stable/c/b198ed4e52580a7238c7c7082f03906f8b310313
- https://github.com/sgkdev/packet_edit_meme