CVE-2024-8612
Qemu-kvm: information leak in virtio devices
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Qemu-kvm: information leak in virtio devices
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.
Reserved 2024-09-09 | Published 2024-09-20 | Updated 2024-11-13 | Assigner redhatExposure of Sensitive Information to an Unauthorized Actor
| 2024-09-20: | Reported to Red Hat. |
| 2024-09-20: | Made public. |
Red Hat would like to thank Xiao Lei (FSL team), Yiming Tao (FSL team), and Yongkang Jia (FSL team) for reporting this issue.
access.redhat.com/security/cve/CVE-2024-8612
bugzilla.redhat.com/show_bug.cgi?id=2313760 (RHBZ#2313760)
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