CVE-2026-47333
Heap Out-of-Bounds Read in Ubuntu Linux AppArmor
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-125 | The product reads data past the end, or before the beginning, of the intended buffer. |
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, specifically in the AppArmor SAUCE patches. It involves an incorrect computation of the size of an internal buffer, which can lead to a heap memory out-of-bounds read during notification handling.
An unprivileged local user can trigger this bug, causing the AppArmor DFA policy engine to process invalid data.
How can this vulnerability impact me? :
The vulnerability can be exploited by an unprivileged local user to cause a heap memory out-of-bounds read, which may lead to the processing of invalid data by the AppArmor policy engine.
According to the CVSS score (7.8), the impact includes high confidentiality, integrity, and availability risks, meaning it could allow unauthorized access to sensitive information, modification of data, or disruption of system operations.