CVE Database›Document archive›CVE-2025-40135

CVE-2025-40135

kernel: ipv6: use RCU in ip6_xmit()

Loading…

Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · November 12, 2025

Updated · July 30, 2026

Description

A use-after-free flaw was found in ip6_autoflowlabel in the Linux kernel's net/ipv6/ip6_output.c code. In this flaw an attacker can cause a denial of service (DoS) attack.

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

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-825 · Expired Pointer Dereference