CVE-2025-38165

kernel: bpf, sockmap: Fix panic when calling skb_linearize

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · July 3, 2025

Updated · October 21, 2026

Description

A flaw was found in the Linux kernel sockmap stream parser. A backlog path calls skb_linearize() on an skb that is not in the state that function requires, and the kernel hits a BUG. A local user who can attach that sockmap program can crash the kernel.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-366 · Race Condition within a Thread