wifi: mt76: mt7996: bound the device EEPROM address before the EFUSE copy
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: bound the device EEPROM address before the EFUSE copy mt7996_mcu_get_eeprom() derives the destination of the EFUSE/EXT block copy from the address reported by the MCU response (event->addr, a device-controlled __le32) and clamps only the copy length, never the destination offset into dev->mt76.eeprom.data. A malicious or malfunctioning device can report an arbitrary address and drive an out-of-bounds write of up to MT7996_EXT_EEPROM_BLOCK_SIZE bytes past eeprom.data. Reject a response whose address would place the copy outside eeprom.data before deriving the destination pointer. Devices that echo the requested in-bounds offset are unaffected.
CVE-2026-80935
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80935
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "4892be1ef0bbe6db6b13bf46cb79b6706bb5b214",
"versionType": "git"
},
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "388f471ca4758f644394b681ce97677a4d0e772c",
"versionType": "git"
},
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "9e5abb5e2ade0b6fd0e47209711115d47a255176",
"versionType": "git"
},
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "6be59da2063d5b3522bfde8aae0487ec095eb384",
"versionType": "git"
},
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "13b3c29a782033ce4a230be9e5618032813dbcd4",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7996/mcu.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7996/mcu.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80935
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46647 · Revision 1
- Added to Heist Feed
- Publisher date