wifi: mt76: mt7996: validate RX band_idx before dereferencing phys[]
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: validate RX band_idx before dereferencing phys[] band_idx comes from a 2-bit descriptor field (0-3) and was used directly to index dev->mt76.phys[] (size __MT_MAX_BAND == 3) and dereference the result. A corrupt or reserved descriptor value could index out of bounds or hit a NULL phy on parts with fewer bands. Reject invalid band indices, mirroring mt7996_rx_get_wcid().
CVE-2026-90374
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-2026-90374
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": "493a029c205a994644327d554f0cfeb9651aba7c",
"versionType": "git"
},
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "535091c587268cc783608642838a655d828eefdd",
"versionType": "git"
},
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "0f53ece876e1f3bbb3e18f48afc4af1ee967b16c",
"versionType": "git"
},
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "b1c5cf8903bec5476a2233b4e45287b9a2213e02",
"versionType": "git"
},
{
"status": "affected",
"version": "98686cd21624c75a043e96812beadddf4f6f48e5",
"lessThan": "2243778a5fae8329ab5f18e7adcd7e03b911a1b7",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7996/mac.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": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7996/mac.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90374
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48682 · Revision 1
- Added to Heist Feed
- Publisher date