Local privilege escalation via unchecked video buffer index
Published Jun 13, 2024 · Updated Mar 24, 2025
Out-of-bounds write in Android's v4l2 component allows local users to elevate privileges through a crafted video-buffer queue request. The v4l2_smfc_qbuf function in smfc-v4l2-ioctls.c uses a queue value without the required bounds check, permitting a write beyond its intended buffer. A local low-privileged process must reach the Pixel-family v4l2 path; no user interaction is required, and successful exploitation raises privileges.
Summary
What happened
Out-of-bounds write in Android's v4l2 component allows local users to elevate privileges through a crafted video-buffer queue request. The v4l2_smfc_qbuf function in smfc-v4l2-ioctls.c uses a queue value without the required bounds check, permitting a write beyond its intended buffer. A local low-privileged process must reach the Pixel-family v4l2 path; no user interaction is required, and successful exploitation raises privileges.
The record
- CVE
- CVE-2024-32901
- Published
- Jun 13, 2024
- Updated
- Mar 24, 2025
- Vendor
- Product
- Android
- Classifications
- CWE-787, CWE-267, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 13, 2024CVE publishedPublication date reported by the CVE source.
- Mar 24, 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_kernel
- Affected versionversion=Android kernel
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.
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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