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CVE-2021-20257

Public on 2022-03-16
Modified on 2024-01-18
Description

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.

Severity
Low
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CVSS v3 Base Score
3.2
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core qemu 2023-05-25 17:41 ALAS2-2023-2060

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 3.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
NVD CVSSv2 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P
NVD CVSSv3 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H