Local kernel-memory disclosure via uninitialized Tachyon data
Published Sep 4, 2025 · Updated Sep 4, 2025
Information disclosure in Android's TPU component allows local users to read kernel memory through ReadTachyonCommands. ReadTachyonCommands in gxp_main_actor.cc returns data from an uninitialized resource, exposing residual kernel contents rather than initialized command data. Exploitation requires local access but no additional execution privileges or user interaction, and disclosure is limited to data present in the affected resource.
Summary
What happened
Information disclosure in Android's TPU component allows local users to read kernel memory through ReadTachyonCommands. ReadTachyonCommands in gxp_main_actor.cc returns data from an uninitialized resource, exposing residual kernel contents rather than initialized command data. Exploitation requires local access but no additional execution privileges or user interaction, and disclosure is limited to data present in the affected resource.
The record
- CVE
- CVE-2025-36893
- Published
- Sep 4, 2025
- Updated
- Sep 4, 2025
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- CWE-908, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 4, 2025CVE publishedPublication date reported by the CVE source.
- Sep 4, 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
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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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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