CVE-2026-23439: udp_tunnel: fix NULL deref caused by udp_sock_create6 when CONFIG_IPV6=n
Overview
- Severity
- Medium (CVSS 5.5)
- CVSS Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Apr
- Released
- 2026-04-25
- EPSS Score
- 0.01% (percentile: 2.3%)
Affected Products (1)
Open Source Software
- cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
Revision History
- 2026-04-25: Information published.