A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: redhat
Published: 2022-03-23T19:46:40
Updated: 2024-08-03T17:09:08.293Z
Reserved: 2021-08-30T00:00:00
Link: CVE-2021-3748
Vulnrichment
No data.
NVD
Status : Modified
Published: 2022-03-23T20:15:09.893
Modified: 2024-11-21T06:22:19.667
Link: CVE-2021-3748
Redhat