CVE-2026-53100

Summary

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: fix deadlock in remain-on-channel

mt76_remain_on_channel() and mt76_roc_complete() call mt76_set_channel() while already holding dev->mutex. Since mt76_set_channel() also acquires dev->mutex, this results in a deadlock.

Use __mt76_set_channel() instead of mt76_set_channel(). Add cancel_delayed_work_sync() for mac_work before acquiring the mutex in mt76_remain_on_channel() to prevent a secondary deadlock with the mac_work workqueue.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/5fc8c5d45e44575dda9fcabdc2aac4ad97baf0cd
• https://git.kernel.org/stable/c/7a89c245d203aa0ed5ff2d68ac05b48b2ef9fa3f
• https://git.kernel.org/stable/c/6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e

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