CVE-2026-47326: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a memory leak in the handling of big responses to AppArmor notifications. The bug can be triggered by an unprivileged local user. The memory leak could lead to resource exhaustion.

Affected products

• Canonical Ubuntu Linux: version 24.04 only; version 25.10 only; version 26.04 only

Published 2026-05-28. Last modified 2026-06-17.