CVE-2026-47328

Published: May 28, 2026Modified: Jun 17, 2026

6.1

Vector

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

Exploitability: 1.8 / Impact: 4.2

Source: security@ubuntu.com (Secondary)

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.

Affected (3)

Products: Canonical: Ubuntu Linux

1 product

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Canonical Ubuntu Linux	Version 24.04
Canonical Ubuntu Linux	Version 25.10
Canonical Ubuntu Linux	Version 26.04

Related CWEs

Free of Memory not on the Heap

The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc().

References (1)

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

Source: security@ubuntu.com

Patch

Timeline

No history available yet.