In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: validate default EEPROM firmware size The default EEPROM… (CVE-2026-80933)
A vulnerability in the Linux kernel's mt76 driver for the mt7996 WiFi chipset involves improper validation of the default EEPROM firmware size. The driver parses and copies the EEPROM firmware without verifying its length, which can lead to reading beyond the firmware buffer if the file is truncated. The issue is addressed by rejecting EEPROM files shorter than the expected size before processing.
AI Analysis
Technical Summary
The Linux kernel mt76 driver for the mt7996 WiFi chipset had a vulnerability where the default EEPROM firmware was parsed and copied without length validation. This allowed a truncated EEPROM file to cause the driver to read beyond the allocated firmware buffer during variant validation or fallback copying. The fix involves rejecting EEPROM files that are shorter than the defined MT7996_EEPROM_SIZE before parsing or copying the firmware data.
Potential Impact
This vulnerability could cause the driver to read memory beyond the intended firmware buffer, potentially leading to undefined behavior such as crashes or memory corruption. The input data does not specify exploitation details or impacts beyond this memory read issue.
Mitigation Recommendations
A fix is available that rejects EEPROM firmware files shorter than the expected MT7996_EEPROM_SIZE before parsing or copying. Users should apply the official Linux kernel update that includes this validation to remediate the vulnerability. No additional mitigation steps are indicated.
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: validate default EEPROM firmware size The default EEPROM… (CVE-2026-80933)
Description
A vulnerability in the Linux kernel's mt76 driver for the mt7996 WiFi chipset involves improper validation of the default EEPROM firmware size. The driver parses and copies the EEPROM firmware without verifying its length, which can lead to reading beyond the firmware buffer if the file is truncated. The issue is addressed by rejecting EEPROM files shorter than the expected size before processing.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel mt76 driver for the mt7996 WiFi chipset had a vulnerability where the default EEPROM firmware was parsed and copied without length validation. This allowed a truncated EEPROM file to cause the driver to read beyond the allocated firmware buffer during variant validation or fallback copying. The fix involves rejecting EEPROM files that are shorter than the defined MT7996_EEPROM_SIZE before parsing or copying the firmware data.
Potential Impact
This vulnerability could cause the driver to read memory beyond the intended firmware buffer, potentially leading to undefined behavior such as crashes or memory corruption. The input data does not specify exploitation details or impacts beyond this memory read issue.
Mitigation Recommendations
A fix is available that rejects EEPROM firmware files shorter than the expected MT7996_EEPROM_SIZE before parsing or copying. Users should apply the official Linux kernel update that includes this validation to remediate the vulnerability. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2pcp-qx27-wf69
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-80933"]
Threat ID: 6aa4a03355bf5e2cf5a87400
Added to database: 09/12/2026, 00:43:31 UTC
Last enriched: 09/12/2026, 01:28:11 UTC
Last updated: 09/12/2026, 01:52:07 UTC
Views: 4
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