Kernel memory corruption via unchecked EEPROM offset
Published Sep 11, 2026 · Updated Sep 11, 2026
An out-of-bounds write in the Linux mt7915 Wi-Fi driver allows attackers to corrupt kernel memory through a malicious device response. mt7915_mcu_get_eeprom derives an eeprom.data destination from the MCU-controlled res->addr value and copies a fixed 16-byte EFUSE block without checking the buffer boundary. Exploitation requires an MT7915-family device that returns an out-of-range address; an in-range response does not trigger the write.
Summary
What happened
An out-of-bounds write in the Linux mt7915 Wi-Fi driver allows attackers to corrupt kernel memory through a malicious device response. mt7915_mcu_get_eeprom derives an eeprom.data destination from the MCU-controlled res->addr value and copies a fixed 16-byte EFUSE block without checking the buffer boundary. Exploitation requires an MT7915-family device that returns an out-of-range address; an in-range response does not trigger the write.
The record
- CVE
- CVE-2026-80937
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1200
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 11, 2026CVE publishedPublication date reported by the CVE source.
- Sep 11, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.8
- Affected versionversion=e57b7901469fc0b021930b83a8094baaf3d81b09 <44b5adfe49499f53002737f5fe81d608c08122fc
- Affected versionversion=e57b7901469fc0b021930b83a8094baaf3d81b09 <5f48b0d752a76590e2c613aae5345c2474627d1b
- Affected versionversion=e57b7901469fc0b021930b83a8094baaf3d81b09 <5fdaf7016d7684ef756a229fd5d96b4a140eeb40
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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