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CVE-2021-20257

Published: Mar 16, 2022

Modified: Aug 3, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	QEMU	affected `Fixed-In v6.2.0`

Weaknesses (CWE)

References

https://www.openwall.com/lists/oss-security/2021/02/25/2

x_refsource_MISC

https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg07428.html

x_refsource_MISC

https://github.com/qemu/qemu/commit/3de46e6fc489c52c9431a8a832ad8170a7569bd8

x_refsource_MISC

https://bugzilla.redhat.com/show_bug.cgi?id=1930087

x_refsource_MISC

https://security.netapp.com/advisory/ntap-20220425-0003/

x_refsource_CONFIRM

vendor-advisory

x_refsource_GENTOO

[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update

mailing-list

x_refsource_MLIST

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