PT-2026-64712 · Linux · Linux

CVE-2026-64491

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Publicado

2026-07-25

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Atualizado

2026-07-25

Nenhuma

Não há classificações de severidade ou métricas disponíveis. Quando houver, atualizaremos as informações correspondentes na página.
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usx2y: us144mkii: fix work UAF on disconnect
tascam disconnect() cancels capture work and midi in work before usb kill anchored urbs() kills the capture/MIDI-in URBs. Those URBs self-resubmit, and their completion handlers reschedule the work.
A URB that completes in the small window between cancel work sync() and usb kill anchored urbs() therefore re-arms the work after its only cancel. Nothing cancels it again before snd card free() frees the card-private tascam structure, so the work handler then runs on freed memory.
Kill the anchored URBs before cancelling the work; once the work is cancelled no remaining URB can complete to re-arm it.
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Identificadores relacionados

CVE-2026-64491

Produtos afetados

Linux