Ubuntu AppArmor SAUCE Uninit Var Bug (6.8/7.x) Wrong Caching
CVE-2026-47330 Published on May 28, 2026
Use of uninitialized value in Ubuntu Linux AppArmor notification handling
Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an uninitialized variable in notification handling code. The bug can be triggered by an unprivileged local user and can result in the incorrect caching of AppArmor notification responses.
Vulnerability Analysis
CVE-2026-47330 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, with no impact on integrity, and no impact on availability.
Weakness Type
Use of Uninitialized Variable
The code uses a variable that has not been initialized, leading to unpredictable or unintended results. In some languages such as C and C++, stack variables are not initialized by default. They generally contain junk data with the contents of stack memory before the function was invoked. An attacker can sometimes control or read these contents. In other languages or conditions, a variable that is not explicitly initialized can be given a default value that has security implications, depending on the logic of the program. The presence of an uninitialized variable can sometimes indicate a typographic error in the code.
Products Associated with CVE-2026-47330
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.