CVE-2026-46331

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net/sched: fix pedit partial COW leading to page cache corruption<br /> <br /> tcf_pedit_act() computes the COW range for skb_ensure_writable()<br /> once before the key loop using tcfp_off_max_hint, but the hint does<br /> not account for the runtime header offset added by typed keys. This<br /> can leave part of the write region un-COW&amp;#39;d.<br /> <br /> Fix by moving skb_ensure_writable() inside the per-key loop where<br /> the actual write offset is known, and add overflow checking on the<br /> offset arithmetic. For negative offsets (e.g. Ethernet header edits<br /> at ingress), use skb_cow() to COW the headroom instead. Guard<br /> offset_valid() against INT_MIN, where negation is undefined.