CVE-2026-31548
- Source
- https://cve.org/CVERecord?id=CVE-2026-31548
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31548.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-31548
- Downstream
- Related
- Published
- 2026-04-24T14:33:16Z
- Modified
- 2026-08-27T18:26:55Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31548.json" }- References
-
- https://git.kernel.org/stable/c/28d3551f8d8cb3aec7497894d94150fe84d20e5e
- https://git.kernel.org/stable/c/37e776e2e0a523731e2470dce6d563f0e8632a40
- https://git.kernel.org/stable/c/6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09
- https://git.kernel.org/stable/c/72b7ea786b8e570ae11149e9089859a4a8634a13
- https://git.kernel.org/stable/c/a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf
- https://git.kernel.org/stable/c/d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31548.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-31548
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9bb7e0f24e7e7d00daa1219b14539e2e602649b2Fixed28d3551f8d8cb3aec7497894d94150fe84d20e5eFixed37e776e2e0a523731e2470dce6d563f0e8632a40Fixedd32c07ef1880fe20cf4ab223dbfedc9c0b2816aaFixeda1b7a843f12a0c3e9d3a2ca607ce451916ef42cfFixed72b7ea786b8e570ae11149e9089859a4a8634a13Fixed6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09
Linux / Kernel
Package
- Name
- Kernel