Feed/CVE-2026-46331
CVE-2026-46331HIGHCVSS 7.8

CVE-2026-46331

Published Jun 16, 2026·Updated Jul 7, 2026

NVD Description

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.

Public Exploits & PoCs13 found

PoC: page-cache-corruption-lpes

CVE-2026-46331 and CVE-2026-43503

2

[POC] GHSA-652q-gvq3-74qv — PoC-CVE-2026-46331

Pedit COW – Linux Kernel Local Privilege Escalation (CVE-2026-46331)

[POC] GHSA-2j8v-hwgc-x698 — CVE-2026-46331

pedit COW

[POC] CVE-2026-46331 — cve-2026-46331-pedit-cow-auditd-detection

Defensive validation of CVE-2026-46331 / pedit COW with auditd, AppArmor, mitigation comparison and detection logic.

[POC] MAL-2026-2307 — CVE-2026-46331

Chequeo y Fix de la vulnerabilidad "pedit COW"

[POC] MAL-2026-2307 — cve-2026-46331-audit

cve-2026-46331-audit script

[POC] MAL-2026-2307 — CVE-2026-46331

CVE-2026-46331 - Draft

[POC] MAL-2026-2307 — CVE-2026-46331

CVE-2026-46331

[POC] CVE-2026-46331 — packet_edit_meme

PACKET_EDIT_MEME.c (aka CVE-2026-46331): yet another page cache poisoning nightmare

PoC: CVE-2026-46331-pedit-cow

Write-up and exploitation steps for the pedit COW vulnerability (CVE-2026-46331)

PoC: CVE-2026-46331

CVE-2026-46331 act_pedit page-cache corruption exploit, with Alpine PIE fix

PoC: CVE-2026-46331

A Proof of Concept (PoC) exploit for CVE-2026-46331

PoC: dirtyclone-exploit

CVE-2026-46331 — Linux Kernel Local Privilege Escalation TC pedit + IPsec TEE Page Cache Corruption · Affected kernels: ≤ 6.12.9

Community Discussion

CVSS Vector

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

References

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