wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down When the nl80211 socket that originated a PMSR request is closed, cfg80211_release_pmsr() sets the request's nl_portid to zero and schedules pmsr_free_wk to process the abort asynchronously. If the interface is concurrently torn down before that work runs, cfg80211_pmsr_wdev_down() calls cfg80211_pmsr_process_abort() directly. However, the already- scheduled pmsr_free_wk work item remains pending and may run after the interface has been removed from the driver. This could cause the driver's abort_pmsr callback to operate on a torn-down interface, leading to undefined behavior and potential crashes. Cancel pmsr_free_wk synchronously in cfg80211_pmsr_wdev_down() before calling cfg80211_pmsr_process_abort(). This ensures any pending or in-progress work is drained before interface teardown proceeds, preventing the work from invoking the driver abort callback after the interface is gone.
CVE-2026-31548
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-2026-31548
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": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
"lessThan": "28d3551f8d8cb3aec7497894d94150fe84d20e5e",
"versionType": "git"
},
{
"status": "affected",
"version": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
"lessThan": "37e776e2e0a523731e2470dce6d563f0e8632a40",
"versionType": "git"
},
{
"status": "affected",
"version": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
"lessThan": "d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa",
"versionType": "git"
},
{
"status": "affected",
"version": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
"lessThan": "a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf",
"versionType": "git"
},
{
"status": "affected",
"version": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
"lessThan": "72b7ea786b8e570ae11149e9089859a4a8634a13",
"versionType": "git"
},
{
"status": "affected",
"version": "9bb7e0f24e7e7d00daa1219b14539e2e602649b2",
"lessThan": "6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09",
"versionType": "git"
}
],
"programFiles": [
"net/wireless/pmsr.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.78",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.20",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.10",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/wireless/pmsr.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-31548
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39921 · Revision 1
- Added to Heist Feed
- Publisher date