wifi: mac80211: mesh: reset the CSA state when leaving
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: reset the CSA state when leaving ifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed in ieee80211_mesh_finish_csa(), i.e. when the channel switch completes. Leaving the mesh while a switch is still pending therefore leaks it. Additionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak in this case, so things can get mixed up in addition to the memory leak. Refactor the reset and call it in ieee80211_stop_mesh() to fix it all.
CVE-2026-98327
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-2026-98327
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": "b8456a14e9d2770846fcf74de18ff95b676149a3",
"lessThan": "aba8dfb45864441199748c33ce3c1c8ca121c8bd",
"versionType": "git"
},
{
"status": "affected",
"version": "b8456a14e9d2770846fcf74de18ff95b676149a3",
"lessThan": "bd3b21145ae2e781daac1bbd19216a63ab4e0cbd",
"versionType": "git"
},
{
"status": "affected",
"version": "b8456a14e9d2770846fcf74de18ff95b676149a3",
"lessThan": "ba5bf83a81e8832cb84bb3a2da67512f81f57a02",
"versionType": "git"
},
{
"status": "affected",
"version": "b8456a14e9d2770846fcf74de18ff95b676149a3",
"lessThan": "860134b3af77970e006feab7e5decb8c84771c7f",
"versionType": "git"
}
],
"programFiles": [
"net/mac80211/mesh.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/mac80211/mesh.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98327
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38406 · Revision 1
- Added to Heist Feed
- Publisher date