wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping The code checks ->started for frames coming from wmediumd, but the radio can be stopped after the check and before frame delivery, causing mac80211 to hit the WARN_ON(!local->started). Expand the mutex for this case and synchronise against it when the radio is stopped to avoid being able to hit the warning with hwsim. Drop the error print that would've complicated the error path, it only triggers for allocation failures (already noisy) and malformed frames anyway.
CVE-2026-98423
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-2026-98423
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": "7882513bacb176ab4aacceefdd035ca9479da4fb",
"lessThan": "5ce9b2bc9e73213e316a8c72400256a76bf41814",
"versionType": "git"
},
{
"status": "affected",
"version": "7882513bacb176ab4aacceefdd035ca9479da4fb",
"lessThan": "c4e4fe330294e3936e0f4e15d6996468f8a45fb2",
"versionType": "git"
},
{
"status": "affected",
"version": "7882513bacb176ab4aacceefdd035ca9479da4fb",
"lessThan": "2f59be7585dc81baa6f36b0035dd6848ea43d318",
"versionType": "git"
},
{
"status": "affected",
"version": "7882513bacb176ab4aacceefdd035ca9479da4fb",
"lessThan": "5c79ef616aa16af582fb2cb93b0f750975a0004f",
"versionType": "git"
},
{
"status": "affected",
"version": "7882513bacb176ab4aacceefdd035ca9479da4fb",
"lessThan": "d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb",
"versionType": "git"
},
{
"status": "affected",
"version": "7882513bacb176ab4aacceefdd035ca9479da4fb",
"lessThan": "87840d4a3a21b1c19b867a80e16ba69dff284de2",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/virtual/mac80211_hwsim_main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"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": [
"drivers/net/wireless/virtual/mac80211_hwsim_main.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98423
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38487 · Revision 1
- Added to Heist Feed
- Publisher date