wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER mt7996_mac_reset_work() parked the tx worker and disabled the RX/TX NAPIs before taking dev->mt76.mutex. mt76_worker_disable()/_enable() are plain kthread park/unpark, not refcounted, and __mt76_set_channel() toggles the same worker and the MT76_RESET bit under the mutex. An L1 SER racing a channel switch could therefore have the worker unparked and MT76_RESET cleared while the reset path resets the DMA rings, corrupting descriptors or tokens. Take the mutex before disabling the worker, as mt7915 does.
CVE-2026-90367
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-2026-90367
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": "27015b6fbcca836c6dbf196afc266e068af4aeec",
"lessThan": "bc4f4389f439e808185778d298da36976d13d415",
"versionType": "git"
},
{
"status": "affected",
"version": "27015b6fbcca836c6dbf196afc266e068af4aeec",
"lessThan": "69f23622533a4f054b5c8fdb226c3319ffa017b6",
"versionType": "git"
},
{
"status": "affected",
"version": "27015b6fbcca836c6dbf196afc266e068af4aeec",
"lessThan": "906ad486ba5c4933d82e1ebe0685656390a48450",
"versionType": "git"
},
{
"status": "affected",
"version": "27015b6fbcca836c6dbf196afc266e068af4aeec",
"lessThan": "594c4b7f89f9ea75dc9c50b5e4c4296db4a3d701",
"versionType": "git"
},
{
"status": "affected",
"version": "27015b6fbcca836c6dbf196afc266e068af4aeec",
"lessThan": "6190db312b8230813f529f014b26247c6d9800d0",
"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": "6.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"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-2026-90367
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48679 · Revision 1
- Added to Heist Feed
- Publisher date