CVE-2021-4158

medium

Description

A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

References

Advisories
More

https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html

https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e

https://bugzilla.redhat.com/show_bug.cgi?id=2035002

https://access.redhat.com/security/cve/CVE-2021-4158

https://gitlab.com/qemu-project/qemu/-/issues/770

Details

Source: Mitre, NVD

Published: 2022-08-24

Updated: 2024-01-25

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:L/AC:L/Au:M/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H