CVE-2026-47334
Analyzed Analyzed - Analysis Complete
AppArmor SAUCE Patch Kernel Panic in Ubuntu Linux

Publication date: 2026-05-28

Last updated on: 2026-06-09

Assigner: Canonical Ltd.

Description
Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock in notification handling code. The bug can be triggered by an unprivileged local user and can result in kernel panic or deadlock.
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Meta Information
Published
2026-05-28
Last Modified
2026-06-09
Generated
2026-06-18
AI Q&A
2026-05-28
EPSS Evaluated
2026-06-16
NVD
CVE-2026-47334
EUVD
EUVD-2026-32989
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
canonical ubuntu_linux 24.04
canonical ubuntu_linux 25.10
canonical ubuntu_linux 26.04
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-833 The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock.
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Executive Summary

This vulnerability exists in Ubuntu Linux versions 6.8, 6.17, and 7.0 due to AppArmor SAUCE patches that incorrectly cause the system to sleep while holding a spinlock during notification handling. This improper handling can be triggered by an unprivileged local user.

As a result, the system may experience a kernel panic or deadlock, which are serious stability issues.

Impact Analysis

The vulnerability can lead to a kernel panic or deadlock, causing the affected Ubuntu Linux system to crash or become unresponsive.

Since it can be triggered by an unprivileged local user, it poses a risk of denial of service by disrupting normal system operations.

Compliance Impact

The vulnerability in Ubuntu Linux AppArmor patches can be triggered by an unprivileged local user and may cause kernel panic or deadlock, impacting system availability.

However, there is no information provided about any impact on confidentiality or integrity of data, which are critical factors for compliance with standards like GDPR or HIPAA.

Therefore, based on the available information, it is unclear how this vulnerability directly affects compliance with common standards and regulations.

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