CVE-2026-47330 PUBLISHED

Use of uninitialized value in Ubuntu Linux AppArmor notification handling

Assigner: canonical
Reserved: 19.05.2026 Published: 28.05.2026 Updated: 28.05.2026

Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an uninitialized variable in notification handling code. The bug can be triggered by an unprivileged local user and can result in the incorrect caching of AppArmor notification responses.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 3.3

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Canonical
Product	Ubuntu Linux
Versions	Default: unaffected affected from 6.8.0 to 6.8.0-124.124 (excl.) affected from 6.17.0 to 6.17.0-35.35 (excl.) affected from 7.0.0 to 7.0.0-22.22 (excl.)

Credits

Tristan Madani (@TristanInSec), Talence Security finder

References

https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=9b2c6eded493fa50e7c8cd3618d7ebe1358abaab

Problem Types

CWE-457 Use of uninitialized variable CWE