CVE-2026-47328 — Invalid pointer deallocation in Ubuntu Linux AppArmor notification handling

CVE-2026-47328

Invalid pointer deallocation in Ubuntu Linux AppArmor notification handling PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Canonical / Ubuntu Linux	affected 6.8.0 before 6.8.0-124.124; affected 6.17.0 before 6.17.0-35.35; affected 7.0.0 before 7.0.0-22.22

CWE

CWE-590

References

https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=7f3c4902c39432ce7ea0d384cb70eba282247fac

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.