CVE-2026-47329
AppArmor Notification Size Validation Flaw 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 |
| ubuntu | linux | to 6.8 (inc) |
| ubuntu | linux | to 6.17 (inc) |
| ubuntu | linux | to 7.0 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-1284 | The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties. |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability impact me? :
The vulnerability could allow an unprivileged local user to handle crafted AppArmor notification responses improperly, potentially leading to limited integrity issues.
According to the CVSS score (3.3), the impact is low severity with no confidentiality or availability impact, but it may affect system integrity.
Can you explain this vulnerability to me?
This vulnerability exists in Ubuntu Linux versions 6.8, 6.17, and 7.0 where SAUCE patches fail to properly validate invalid sizes of the name field in AppArmor notification responses.
An unprivileged local user can trigger this bug by crafting specific responses that exploit this validation failure.