CVE-2026-47328
Invalid pointer deallocation in Ubuntu Linux AppArmor notification handling
6.1CVSSMEDIUM
Description
Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:LIntegrityLow
A:HAvailabilityHigh
Weaknesses
Affected Products
Exploitability
Official Patch Available
References
Timeline
Published
May 28, 2026
Last Updated
Jun 9, 2026
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