CVE-2026-31548High· 7.8▾ TwilightIn 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 reque…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 < 28d3551f8d8cb3aec7497894d94150fe84d20e5eLinux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 < 37e776e2e0a523731e2470dce6d563f0e8632a40Linux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 < d32c07ef1880fe20cf4ab223dbfedc9c0b2816aaLinux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 < a1b7a843f12a0c3e9d3a2ca607ce451916ef42cfLinux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 < 72b7ea786b8e570ae11149e9089859a4a8634a13Linux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 < 6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09Linux 5.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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