• CVE-2021-20257

发布时间: 2022年6月2日

修改时间: 2024年10月31日

概要

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.

CVSS v3 指标

NVD openEuler
Confidentiality None None
Attack Vector Local Local
CVSS评分 6.5 6.5
Attack Complexity Low Low
Privileges Required Low Low
Scope Changed Changed
Integrity None None
User Interaction None None
Availability High High

安全公告

公告名 概要 发布时间
KylinSec-SA-2022-1557 qemu security update 2022年6月2日

影响产品

产品 状态
KY3.4-4A qemu Fixed
KY3.4-5 qemu Fixed