CVE-2026-46331

Vulnerability overview

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...

Affected product and versions

Product

Linux Linux, NVIDIA for RHEL 10, Red Hat Enterprise Linux 10

Affected versions

>= abe35bf3be51482593076d516a680d79e5fbc8e1 < 544d857b42a1734b923040e13aa61a6fd4746cf2, >= b773640d5bb9e2acfd91e2695717af04d47aa116 < d5d01d35a5a7d36f7cb679b67d9cbdd5205672dc, >= 8b796475fd7882663a870456466a4fb315cc1bd6 < a071e057518decc5e3bec89855758f5f8786f2c5, >= 8b796475fd7882663a870456466a4fb315cc1bd6 < b685d6ef6f07a3b5ce814565a25f39f2157538a5, >= 8b796475fd7882663a870456466a4fb315cc1bd6 < 2bec122b9fb91507a758ab5e3e5c4fbe7cb3f61b, >= 8b796475fd7882663a870456466a4fb315cc1bd6 < b198ed4e52580a7238c7c7082f03906f8b310313, >= 8b796475fd7882663a870456466a4fb315cc1bd6 < 3dee9d0c198faeb95d052c1b94c2958751a28512, >= 8b796475fd7882663a870456466a4fb315cc1bd6 < 899ee91156e57784090c5565e4f31bd7dbffbc5a, >= d0c38a914b0c4c21d553da801003d36979016726, >= 2ec2dd7d51a9320151f275ddbb2b53260fb32ca1, >= c19cc520b3d69904e9518d401ad0df7f4702aca0, >= 5.10.117 < 5.10.260, >= 5.15.41 < 5.15.211, >= 4.19.244 < 4.20, >= 5.4.195 < 5.5, >= 5.17.9 < 5.18, >= 5.18, >= 5.10.117 < 5.11, >= 5.15.41 < 5.16, >= 5.18.1 < 6.12.94

Fixed versions

4.20, 5.5, 5.11, 5.16, 5.18, 6.12.94, 6.18.36, 7.0.13

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-190, CWE-787