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Tracker / CVE-2026-31548

CVE-2026-31548

Alta 7.8

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.

Prodotti e versioni affette

linux linux_kernel
linux linux_kernel · 5.0.1 → 6.1.167
linux linux_kernel · 6.13 → 6.18.20
linux linux_kernel · 6.19 → 6.19.10
linux linux_kernel · 6.2 → 6.6.130
linux linux_kernel · 6.7 → 6.12.78

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