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CVE-2024-8612

Qemu-kvm: information leak in virtio devices

Low3.8EPSS 0.20%
Published
Updated
Reserved
Assigned by
redhat

Description

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.

Timeline

  1. ID reserved

    By redhat

  2. · 11 days later

    Published

  3. · 2 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-8612, by who scored it
Scored byCVSSScoreVector
redhatCNA (assigner)3.1Low3.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
NVDNVD · Deferred3.1Low3.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
EPSS (exploitation in 30 days)
0.20% · top 90% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.8.

Weakness

Affected products

References (4)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .