CVE-2026-47328 MEDIUM

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

Vendor Canonical
Product Ubuntu Linux
Weakness CWE-590
Published May 28, 2026
Last update May 28, 2026
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 28, 2026 CVE published
May 28, 2026 Record updated