This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-20257 →
DEBIAN-CVE-2021-20257
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_des...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-9"}]}]
Debian:13
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-9"}]}]
Debian:14
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-9"}]}]
References
- advisory security-tracker.debian.org