Null Deref in AF_INET/AF_INET6 Oops on Ubuntu Kernel 6.8/6.17/7.0
CVE-2026-47337 Published on May 28, 2026
NULL pointer dereference in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation
Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AF_INET/AF_INET6 socket mediation. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops.
Vulnerability Analysis
CVE-2026-47337 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
Products Associated with CVE-2026-47337
Want to know whenever a new CVE is published for Canonical Ubuntu Linux? stack.watch will email you.
Affected Versions
Canonical Ubuntu Linux:- Version 6.8.0 and below 6.8.0-124.124 is affected.
- Version 6.17.0 and below 6.17.0-35.35 is affected.
- Version 7.0.0 and below 7.0.0-22.22 is affected.