Kernel heap disclosure via uninitialized driver memory
Published Aug 24, 2022 · Updated Aug 3, 2024
Information disclosure in the PowerVR GPU driver on Android SoC devices allows local users to read uninitialized kernel heap memory. The driver returns heap memory to an unprivileged application without initializing the buffer, exposing residual kernel data. Exploitation requires code execution as an unprivileged app on a device containing the affected GPU, and the reported impact is limited to disclosure.
Summary
What happened
Information disclosure in the PowerVR GPU driver on Android SoC devices allows local users to read uninitialized kernel heap memory. The driver returns heap memory to an unprivileged application without initializing the buffer, exposing residual kernel data. Exploitation requires code execution as an unprivileged app on a device containing the affected GPU, and the reported impact is limited to disclosure.
The record
- CVE
- CVE-2021-0891
- Published
- Aug 24, 2022
- Updated
- Aug 3, 2024
- Vendor
- Imagination Technologies
- Product
- PowerVR GPU
- Classifications
- CWE-269
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 24, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=Android SoC
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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