CVE-2026-46331
HIGH 7.8EPSS 0.6%
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.
- CVSS v3.1
- 6.7 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.58% chance of exploitation in the next 30 days, 46th percentile
- Published
- 2026-06-16
- Updated
- 2026-08-24
Proof-of-concept exploits (10)
- 0xBlackash/CVE-2026-4633130★ · 2026-06-26
- vulnquest58/dirtyclone-exploit6★ · 2026-06-28
- HORKimhab/CVE-2026-463310★ · 2026-06-27
- seguridadentrerios/CVE-2026-463310★ · 2026-06-30
- rjt-gupta/page-cache-corruption-lpes12★ · 2026-07-22
- yanxinwu946/CVE-2026-463314★ · 2026-07-12
- nawalacheker1/CVE-2026-463310★ · 2026-08-27
- cherrycherrymay/PoC-CVE-2026-463310★ · 2026-07-24
- 0xdeadroot/pedit-cow-exploit1★ · 2026-07-22
- V0IDNETWORK/CVE-2026-46331