Local privilege escalation via improper detach validation
Published Sep 15, 2026 · Updated Sep 15, 2026
Improper input validation in Android's arm-smmu-v3 kernel driver allows local users with System privileges to escalate privilege. The smmu_detach_dev_nested function processes an unspecified unvalidated input during device detachment; Google has not disclosed the missing check or resulting kernel state change. Exploitation requires existing System execution privileges and no user interaction, and the published impact is limited to further local privilege escalation.
Summary
What happened
Improper input validation in Android's arm-smmu-v3 kernel driver allows local users with System privileges to escalate privilege. The smmu_detach_dev_nested function processes an unspecified unvalidated input during device detachment; Google has not disclosed the missing check or resulting kernel state change. Exploitation requires existing System execution privileges and no user interaction, and the published impact is limited to further local privilege escalation.
The record
- CVE
- CVE-2026-58718
- Published
- Sep 15, 2026
- Updated
- Sep 15, 2026
- Vendor
- Product
- Android
- Classifications
- T1404
- Attack vector
- local
- Privileges
- admin
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
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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