AppArmor SAUCE bug in Ubuntu kernel 6.8/6.17/7.0 causes panic/deadlock
CVE-2026-47334 Published on May 28, 2026
Deadlock or kernel panic in Ubuntu Linux AppArmor notification handling
Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock in notification handling code. The bug can be triggered by an unprivileged local user and can result in kernel panic or deadlock.
Vulnerability Analysis
CVE-2026-47334 is exploitable 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 high impact on availability.
Weakness Type
Deadlock
The software contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock.
Products Associated with CVE-2026-47334
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.