Freed kernel-memory access via improper GPU operations
Published Mar 8, 2023 · Updated Mar 5, 2025
Use-after-free in Arm Mali GPU Kernel Driver Valhall and Avalon releases allows local users to access freed kernel memory via GPU operations. The driver permits improper GPU processing operations to retain or regain access to memory after that memory has been freed; Arm has not published a finer code-level locus. A non-privileged local account with access to the GPU driver is required, and the documented consequence is access to freed memory rather than a specifically confirmed privilege gain.
Summary
What happened
Use-after-free in Arm Mali GPU Kernel Driver Valhall and Avalon releases allows local users to access freed kernel memory via GPU operations. The driver permits improper GPU processing operations to retain or regain access to memory after that memory has been freed; Arm has not published a finer code-level locus. A non-privileged local account with access to the GPU driver is required, and the documented consequence is access to freed memory rather than a specifically confirmed privilege gain.
The record
- CVE
- CVE-2022-46394
- Published
- Mar 8, 2023
- Updated
- Mar 5, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-416
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 8, 2023CVE publishedPublication date reported by the CVE source.
- Mar 5, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Attacks
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Public exploit references
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Technologies
Your stack
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