Local privilege escalation via unchecked size arithmetic
Published Sep 13, 2022 · Updated Aug 3, 2024
Integer overflow in the PowerVR GPU kernel driver for Android SoC allows local users to escalate privileges through out-of-bounds heap access. PVRSRVBridgePMRPDumpSymbolicAddr fails to check a size before arithmetic, permitting integer wraparound and an out-of-bounds heap access. Exploitation requires low-privileged local code on a device using the affected driver, needs no user interaction, and yields elevated privileges.
Summary
What happened
Integer overflow in the PowerVR GPU kernel driver for Android SoC allows local users to escalate privileges through out-of-bounds heap access. PVRSRVBridgePMRPDumpSymbolicAddr fails to check a size before arithmetic, permitting integer wraparound and an out-of-bounds heap access. Exploitation requires low-privileged local code on a device using the affected driver, needs no user interaction, and yields elevated privileges.
The record
- CVE
- CVE-2021-0871
- Published
- Sep 13, 2022
- Updated
- Aug 3, 2024
- Vendor
- Imagination Technologies
- Product
- PowerVR GPU
- Classifications
- CWE-190, T1404
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 13, 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
CVSS describes severity. EPSS estimates exploitation probability.
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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