Local privilege escalation via unchecked range addition
Published Dec 8, 2025 · Updated Feb 26, 2026
Integer overflow in Android kernel pKVM allows local users to gain elevated privileges through malformed memory-range values. Multiple mem_protect.c range checks computed a 64-bit end address as addr plus size without detecting wraparound before validating host or guest page state. Exploitation requires local low-privileged access, needs no user interaction, and can cause an out-of-bounds kernel write that crosses a privilege boundary.
Summary
What happened
Integer overflow in Android kernel pKVM allows local users to gain elevated privileges through malformed memory-range values. Multiple mem_protect.c range checks computed a 64-bit end address as addr plus size without detecting wraparound before validating host or guest page state. Exploitation requires local low-privileged access, needs no user interaction, and can cause an out-of-bounds kernel write that crosses a privilege boundary.
The record
- CVE
- CVE-2025-48637
- Published
- Dec 8, 2025
- Updated
- Feb 26, 2026
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- CWE-190, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 8, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 2026Record 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
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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