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CVE-2022-49328 is a use-after-free flaw in the Linux kernel mt76 wireless driver. The mt76_txq_schedule transmit-queue scheduler can dereference the mtxq->wcid pointer while the associated mac80211 station-information object is concurrently being allocated, destroyed, or freed. The pointer was not protected by RCU synchronization. KASAN detected an eight-byte read-after-free in the mt76 transmit worker, including an mt7921 execution path. The upstream fix protects mtxq->wcid access with RCU locking across the scheduler and station-information lifecycle operations.
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A use-after-free vulnerability in the Linux kernel mt76 wireless driver caused by a non-RCU wcid pointer.
A use-after-free vulnerability in the Linux kernel mt76 wireless driver caused by a non-RCU WCID pointer, fixed by the Red Hat Enterprise Linux 8.2 AUS kernel update.
A use-after-free vulnerability in the Linux kernel's mt76 wireless driver, occurring in mt76_txq_schedule because a non-RCU wcid pointer could be accessed concurrently with station allocation or freeing. The fix protects mtxq->wcid with RCU locking.
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