A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueue_push as set in virtio_scsi_complete_req / virtio_blk_req_complete / virito_crypto_req_complete could be larger than the true size of the data which has been sent to guest. Once virtqueue_push() finally calls dma_memory_unmap to ummap the in_iov, it may call the address_space_write function to write back the data. Some uninitialized data may exist in the bounce.buffer, leading to an information leak.

A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueue_push as set in virtio_scsi_complete_req / virtio_blk_req_complete / virito_crypto_req_complete could be larger than the true size of the data which has been sent to guest. Once virtqueue_push() finally calls dma_memory_unmap to ummap the in_iov, it may call the address_space_write function to write back the data. Some uninitialized data may exist in the bounce.buffer, leading to an information leak.

Affected: openEuler:22.03-LTS-SP3: qemu, openEuler:20.03-LTS-SP4: qemu, openEuler:22.03-LTS-SP1: qemu, openEuler:24.03-LTS: qemu, openEuler:22.03-LTS-SP4: qemu

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fix(es): A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueue_push as set in virtio_scsi_complete_req / virtio_blk_req_complete / virito_crypto_req_complete could be larger than the true size of the data which has been sent to guest. Once virtqueue_push() finally calls dma_memory_unmap to ummap the in_iov, it may call the address_space_write function to write back the data. Some uninitialized data may exist in the bounce.buffer, leading to an information leak.(CVE-2024-8612)

qemu-9.1.0-2.1 on GA media

Security update for qemu

Affected: Ubuntu:Pro:14.04:LTS: qemu, Ubuntu:Pro:16.04:LTS: qemu, Ubuntu:Pro:18.04:LTS: qemu, Ubuntu:Pro:20.04:LTS: qemu, Ubuntu:22.04:LTS: qemu, Ubuntu:24.04:LTS: qemu, Ubuntu:25.10: qemu, Ubuntu:26.04:LTS: qemu, Ubuntu:26.04:LTS: qemu-hwe

A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueue_push as set in virtio_scsi_complete_req / virtio_blk_req_complete / virito_crypto_req_complete could be larger than the true size of the data which has been sent to guest. Once virtqueue_push() finally calls dma_memory_unmap to ummap the in_iov, it may call the address_space_write function to write back the data. Some uninitialized data may exist in the bounce.buffer, leading to an information leak.

Ein lokaler Angreifer kann eine Schwachstelle in QEMU ausnutzen, um Informationen offenzulegen.