CVE-2026-47333

Out-of-bounds read in Ubuntu Linux AppArmor notification handling

State: Published
Severity: 7.8 High
Published: May 28, 2026
Updated: May 29, 2026
Reserved: May 19, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	canonical

Weaknesses

CWE-125 Out-of-bounds read

Affected Products

Product	Versions
Ubuntu LinuxCanonical	6.8.0 to before 6.8.0-124.124Affected 6.17.0 to before 6.17.0-35.35Affected 7.0.0 to before 7.0.0-22.22Affected

References

https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=635fa30ed9e944bdb7e811fb8a8906286b4b4f06patch

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