CVE-2026-47334
AppArmor SAUCE Patch Kernel Panic in Ubuntu Linux
Publication date: 2026-05-28
Last updated on: 2026-05-28
Assigner: Canonical Ltd.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ubuntu | linux | 6.8 |
| ubuntu | linux | 6.17 |
| ubuntu | linux | 7.0 |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.