CVE-2021-3748

2022-03-2319:46:40

CWE-416

redhat

www.cve.org

8 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.4%

JSON

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.

CNA Affected

[
  {
    "product": "QEMU (virtio-net)",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Affects qemu v0.10.0 and above, Fixed In – v6.2.0-rc0 and above."
      }
    ]
  }
]