Local privilege escalation via shared-HMAC out-of-bounds write
Published Jan 6, 2020 · Updated Aug 4, 2024
Out-of-bounds write in Titan M's km_compute_shared_hmac in the Android kernel allows local users to elevate privileges without interaction. The km4.c routine improperly validates input before writing shared-HMAC data, allowing the write to exceed its intended buffer. Exploitation requires local code execution on an affected Pixel device and grants higher privileges within the device security context.
Summary
What happened
Out-of-bounds write in Titan M's km_compute_shared_hmac in the Android kernel allows local users to elevate privileges without interaction. The km4.c routine improperly validates input before writing shared-HMAC data, allowing the write to exceed its intended buffer. Exploitation requires local code execution on an affected Pixel device and grants higher privileges within the device security context.
The record
- CVE
- CVE-2019-9469
- Published
- Jan 6, 2020
- Updated
- Aug 4, 2024
- Vendor
- Product
- Titan M
- Classifications
- T1404
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Jan 6, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record 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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