Local privilege escalation via unchecked size calculation
Published Apr 19, 2023 · Updated Feb 5, 2025
Integer overflow in the PowerVR GPU kernel driver for Android SoC allows local users to escalate privileges through calls to the affected routine. PVRSRVBridgeRGXKickRS omits a size check before processing supplied values, allowing an integer calculation to wrap and cause out-of-bounds heap access. A local application needs no additional execution privileges or user interaction, and successful exploitation gains elevated kernel privileges.
Summary
What happened
Integer overflow in the PowerVR GPU kernel driver for Android SoC allows local users to escalate privileges through calls to the affected routine. PVRSRVBridgeRGXKickRS omits a size check before processing supplied values, allowing an integer calculation to wrap and cause out-of-bounds heap access. A local application needs no additional execution privileges or user interaction, and successful exploitation gains elevated kernel privileges.
The record
- CVE
- CVE-2021-0873
- Published
- Apr 19, 2023
- Updated
- Feb 5, 2025
- Vendor
- Imagination Technologies
- Product
- PowerVR GPU
- Classifications
- CWE-190, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 19, 2023CVE publishedPublication date reported by the CVE source.
- Feb 5, 2025Record 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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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