Vulnerability · Published Sep 20, 2024 · Assigned by redhat
CVE-2024-8612Qemu-kvm: information leak in virtio devices
Low 3.8
In plain English
A low-severity information exposure in qemu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | qemu | no fix listed | DEBIAN-CVE-2024-8612 |
| Debian:13 | qemu | no fix listed | DEBIAN-CVE-2024-8612 |
| Debian:14 | qemu | no fix listed | DEBIAN-CVE-2024-8612 |
| Ubuntu:22.04:LTS | qemu | no fix listed | UBUNTU-CVE-2024-8612 |
| Ubuntu:24.04:LTS | qemu | no fix listed | UBUNTU-CVE-2024-8612 |
| Ubuntu:25.10 | qemu | no fix listed | UBUNTU-CVE-2024-8612 |
| Ubuntu:26.04:LTS | qemu | no fix listed | UBUNTU-CVE-2024-8612 |
| Ubuntu:26.10 | qemu | no fix listed | UBUNTU-CVE-2024-8612 |
| Ubuntu:26.04:LTS | qemu-hwe | no fix listed | UBUNTU-CVE-2024-8612 |
| Ubuntu:26.10 | qemu-hwe | no fix listed | UBUNTU-CVE-2024-8612 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| qemu | see references | |
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-200 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
References
- https://access.redhat.com/security/cve/CVE-2024-8612 vdb-entry, x_refsource_REDHAT
- RHBZ#2313760 issue-tracking, x_refsource_REDHAT
- https://gitlab.com/qemu-project/qemu/-/commit/637b0aa139565cb82a7b9269e62214f87082635c
- https://security.netapp.com/advisory/ntap-20241108-0006/