Kernel privilege escalation via physical-page use-after-free
Published Jan 8, 2025 · Updated Jan 31, 2025
Use-after-free in Google Android SoC GPU driver code allows local users to escalate privileges to the kernel via page-mapping operations. DevmemIntMapPages in devicemem_server.c mishandles a physical page's lifetime during mapping, leaving a use-after-free condition. Exploitation requires local low-privileged code on a device with the affected SoC driver; no user interaction is required, and success grants kernel privileges.
Summary
What happened
Use-after-free in Google Android SoC GPU driver code allows local users to escalate privileges to the kernel via page-mapping operations. DevmemIntMapPages in devicemem_server.c mishandles a physical page's lifetime during mapping, leaving a use-after-free condition. Exploitation requires local low-privileged code on a device with the affected SoC driver; no user interaction is required, and success grants kernel privileges.
The record
- CVE
- CVE-2023-35685
- Published
- Jan 8, 2025
- Updated
- Jan 31, 2025
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- CWE-416, T1404
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 8, 2025CVE publishedPublication date reported by the CVE source.
- Jan 31, 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?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
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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