Kernel privilege escalation via PMR_ReadBytes use-after-free
Published Dec 4, 2023 · Updated Aug 2, 2024
Use-after-free in the PowerVR-GPU component of Google Android SoC allows local users to execute code with kernel privileges. The PMR_ReadBytes function in pmr.c uses freed memory, enabling attacker-controlled code execution in the kernel. Exploitation requires local code execution on a device using the affected PowerVR GPU, requires no additional execution privileges, and needs no user interaction.
Summary
What happened
Use-after-free in the PowerVR-GPU component of Google Android SoC allows local users to execute code with kernel privileges. The PMR_ReadBytes function in pmr.c uses freed memory, enabling attacker-controlled code execution in the kernel. Exploitation requires local code execution on a device using the affected PowerVR GPU, requires no additional execution privileges, and needs no user interaction.
The record
- CVE
- CVE-2023-21163
- Published
- Dec 4, 2023
- Updated
- Aug 2, 2024
- Vendor
- Product
- Android
- Classifications
- T1404
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 4, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 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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