Qemu-kvm: virtio-snd: heap buffer overflow in virtio_snd_pcm_in_cb (incomplete fix for cve-2024-7730)

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CVE-2026-3195

CVE-2026-3195 : In QEMU’s virtio-snd, the heap buffer overflow occurs in the input callback (virtio_snd_pcm_in_cb) due to an incomplete bounds/iov check. The Attackerkb entry reiterates that the function does not verify whether the iov can fit the data buffer, enabling a heap out-of-bounds write....