CVE-2024-8612 Qemu-kvm: information leak in virtio devices
A flaw in QEMU virtio devices allows attackers to leak uninitialized memory data to the guest, potentially exposing sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-8612?
CVE-2024-8612 is a low-severity vulnerability in Red Hat Enterprise Linux 10, published on 20 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-200
Which versions are affected by CVE-2024-8612?
How do I fix CVE-2024-8612?
Apply the vendor's patch.
Is CVE-2024-8612 being exploited?
There is no known exploitation of CVE-2024-8612 in the wild and no public exploit code.
Sources
Also known as AZL-60151, AZL-60910, DEBIAN-CVE-2024-8612, ECHO-0fa5-4d4e-1a97, GHSA-whq8-5442-qhw7, OESA-2024-2267 and 1 more.