CVE-2026-46331 Affecting ocfs2-kmp-default package, versions <6.4.0-150700.53.55.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-SLES157-OCFS2KMPDEFAULT-17818193
  • published5 Jul 2026
  • disclosed30 Jun 2026

Introduced: 30 Jun 2026

NewCVE-2026-46331  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 ocfs2-kmp-default to version 6.4.0-150700.53.55.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ocfs2-kmp-default package and not the ocfs2-kmp-default package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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 Base Scores

version 3.1