Local privilege escalation via unchecked allocation size
Published Jun 15, 2023 · Updated Dec 18, 2024
Integer overflow in the PowerVR kernel driver on Android SoCs allows local users to elevate privileges through out-of-bounds heap access. The PVRSRVBridgeSyncPrimOpCreate path omits a size check before calculating a heap access, allowing integer wraparound to move access beyond the allocated buffer. Exploitation requires local code execution on a device using the affected driver; no user interaction or additional execution privileges are needed.
Summary
What happened
Integer overflow in the PowerVR kernel driver on Android SoCs allows local users to elevate privileges through out-of-bounds heap access. The PVRSRVBridgeSyncPrimOpCreate path omits a size check before calculating a heap access, allowing integer wraparound to move access beyond the allocated buffer. Exploitation requires local code execution on a device using the affected driver; no user interaction or additional execution privileges are needed.
The record
- CVE
- CVE-2021-0701
- Published
- Jun 15, 2023
- Updated
- Dec 18, 2024
- Vendor
- Imagination Technologies
- Product
- PowerVR GPU
- Classifications
- CWE-190, T1068
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 15, 2023CVE publishedPublication date reported by the CVE source.
- Dec 18, 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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