CVE-2021-20257

2022-03-1614:12:26

CWE-835

redhat

www.cve.org

infinite loop flaw

e1000 nic emulator

denial of service

system availability

AI Score

Confidence

High

EPSS

Percentile

14.2%

JSON

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CNA Affected

[
  {
    "product": "QEMU",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed-In v6.2.0"
      }
    ]
  }
]