Tracker / CVE-2026-46331
CVE-2026-46331
High 7.8
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.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.19.244 → 4.20 |
| linux | linux_kernel · 5.10.117 → 5.11 |
| linux | linux_kernel · 5.15.41 → 5.16 |
| linux | linux_kernel · 5.17.9 → 5.18 |
| linux | linux_kernel · 5.18.1 → 6.12.94 |
| linux | linux_kernel · 5.4.195 → 5.5 |
| linux | linux_kernel · 6.13 → 6.18.36 |
| linux | linux_kernel · 6.19 → 7.0.13 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.