CVE-2026-47328

MEDIUM

Invalid pointer deallocation in Ubuntu Linux AppArmor notification handling

Title source: cna

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.

References (1)

Core 1

Core References

Patch patch

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

Scores

CVSS v3 6.1

EPSS 0.0009

EPSS Percentile 0.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-590

Status published

Products (6)

Canonical/Ubuntu Linux 6.17.0 - 6.17.0-35.35

Canonical/Ubuntu Linux 6.8.0 - 6.8.0-124.124

Canonical/Ubuntu Linux 7.0.0 - 7.0.0-22.22

canonical/ubuntu_linux 24.04

canonical/ubuntu_linux 25.10

canonical/ubuntu_linux 26.04

Published May 28, 2026

Tracked Since May 29, 2026