PT-2026-44477 · Canonical · Ubuntu

Published 2026-05-28 · Updated 2026-06-02 · CVE-2026-47328

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Ubuntu Linux version 6.8 Ubuntu Linux version 6.17 Ubuntu Linux version 7.0

Description AppArmor SAUCE patches contain an issue where the system incorrectly attempts to free a pointer that was not previously allocated via kmalloc(), while simultaneously leaking allocated memory. An unprivileged local user can trigger this bug, potentially resulting in the corruption of slab metadata (the internal data structures used by the kernel to manage memory caches) and leading to resource exhaustion.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-590

Related Identifiers

CVE-2026-47328

USN-8370-1

USN-8371-1

USN-8373-1

USN-8374-1

Affected Products

Ubuntu

References · 57

• https://ubuntu.com/security/CVE-2026-43078 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-47326 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-47330 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-47334 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-47337 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-47335 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43503 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-47333 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31676 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8370-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71134 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8374-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31431 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-47332 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-47328 · Vendor Advisory