wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down

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Summary

CVECVE-2026-31548
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:28 UTC
Updated2026-04-27 20:15:55 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000240000 probability, percentile 0.067850000 (date 2026-04-27)

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 28d3551f8d8cb3aec7497894d94150fe84d20e5e git Not specified
CNA Linux Linux affected 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 37e776e2e0a523731e2470dce6d563f0e8632a40 git Not specified
CNA Linux Linux affected 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa git Not specified
CNA Linux Linux affected 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf git Not specified
CNA Linux Linux affected 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 72b7ea786b8e570ae11149e9089859a4a8634a13 git Not specified
CNA Linux Linux affected 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09 git Not specified
CNA Linux Linux affected 5.0 Not specified
CNA Linux Linux unaffected 5.0 semver Not specified
CNA Linux Linux unaffected 6.1.167 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.130 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.78 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.20 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.10 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/28d3551f8d8cb3aec7497894d94150fe84d20e5e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/37e776e2e0a523731e2470dce6d563f0e8632a40 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/72b7ea786b8e570ae11149e9089859a4a8634a13 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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