Device service interruption via unchecked driver copy
Published Feb 12, 2020 · Updated Aug 6, 2024
Buffer overflows in the Samsung Galaxy S6 Edge Seiren audio driver allow local users to interrupt device operation through /dev/seiren writes. The esa_write path passes an attacker-controlled size to copy_from_user, which copies into the fixed-size global ibuf0 buffer without adequate bounds checks. Access requires the system user, audio-group membership, or a privileged shell; the demonstrated consequence is memory corruption and service interruption.
Summary
What happened
Buffer overflows in the Samsung Galaxy S6 Edge Seiren audio driver allow local users to interrupt device operation through /dev/seiren writes. The esa_write path passes an attacker-controlled size to copy_from_user, which copies into the fixed-size global ibuf0 buffer without adequate bounds checks. Access requires the system user, audio-group membership, or a privileged shell; the demonstrated consequence is memory corruption and service interruption.
The record
- CVE
- CVE-2015-7890
- Published
- Feb 12, 2020
- Updated
- Aug 6, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1642
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 12, 2020CVE publishedPublication date reported by the CVE source.
- Aug 6, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- Samsung 'seiren' Kernel Driver Buffer Overflowproof of concept · validated
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Technologies
Your stack
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Your stack
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