CVE-2026-47333

High

Description

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the size of an internal buffer, leading to a heap memory out-of-bounds read in notification handling code. The bug can be triggered by an unprivileged local user and can result in invalid data being processed by the AppArmor DFA policy engine.

SeverityHigh

CVSS7.8

Exploit probability—

ProductCanonical Ubuntu Linux

PublishedMay 28, 2026

First seenMay 28, 2026

Weakness typeCWE-125Out-of-bounds read

How to fix

Patches

git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=635fa30ed9e944bdb7e811fb8a8906286b4b4f06

Affected products

Product	Affected versions	Fixed in
canonical ubuntu_linux	24.04, 25.10, 26.04	—

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