CVE-2026-31548 (GCVE-0-2026-31548)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:33 – Updated: 2026-04-24 14:33
VLAI?
Title
wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 , < 28d3551f8d8cb3aec7497894d94150fe84d20e5e (git)
Affected: 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 , < 37e776e2e0a523731e2470dce6d563f0e8632a40 (git)
Affected: 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 , < d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa (git)
Affected: 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 , < a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf (git)
Affected: 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 , < 72b7ea786b8e570ae11149e9089859a4a8634a13 (git)
Affected: 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 , < 6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09 (git)
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    Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.20 , ≤ 6.18.* (semver)
Unaffected: 6.19.10 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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