wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset mt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu while dev->wcid[] still holds pointers to the wcid embedded in each freed link; mt76_reset_device() then dereferences those entries and runs mt76_wcid_cleanup() on them. If a grace period elapses in between, the cleanup operates on freed memory. Run mt76_reset_device() first, so the wcid entries are cleaned up and cleared while the links are still valid.
CVE-2026-90356
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-2026-90356
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": "ace5d3b6b49e8391beb4d7244348ba7da5298878",
"lessThan": "2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad",
"versionType": "git"
},
{
"status": "affected",
"version": "ace5d3b6b49e8391beb4d7244348ba7da5298878",
"lessThan": "8826d7a5e2dd727aa96456ccd58b33d2b080e935",
"versionType": "git"
},
{
"status": "affected",
"version": "ace5d3b6b49e8391beb4d7244348ba7da5298878",
"lessThan": "7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7",
"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": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"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-2026-90356
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36690 · Revision 1
- Added to Heist Feed
- Publisher date