Local information disclosure via uninitialized out-of-bounds reads
Published Sep 15, 2026 · Updated Sep 15, 2026
Out-of-bounds read in Android's physmem_extmem_linux.c allows local users to disclose memory through uninitialized data. Multiple functions in the file perform out-of-bounds reads because data used by the read path is left uninitialized. Local access is required, but no additional execution privileges or user interaction is needed; the consequence is limited to information disclosure.
Summary
What happened
Out-of-bounds read in Android's physmem_extmem_linux.c allows local users to disclose memory through uninitialized data. Multiple functions in the file perform out-of-bounds reads because data used by the read path is left uninitialized. Local access is required, but no additional execution privileges or user interaction is needed; the consequence is limited to information disclosure.
The record
- CVE
- CVE-2026-58731
- Published
- Sep 15, 2026
- Updated
- Sep 15, 2026
- Vendor
- Product
- Android
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 15, 2026CVE publishedPublication date reported by the CVE source.
- Sep 15, 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?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
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
No sourced classifications are available.
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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