NULL Pointer Dereference Affecting virt:rhel/libguestfs-tools-c package, versions <1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.1% (42nd percentile)

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  • Snyk IDSNYK-ALMALINUX8-VIRT-5729818
  • published28 May 2023
  • disclosed15 Nov 2022

Introduced: 15 Nov 2022

CVE-2021-4158  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 virt:rhel/libguestfs-tools-c to version 1:1.44.0-5.module_el8.6.0+2880+7d9e3703.alma or higher.
This issue was patched in ALSA-2022:1759.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt:rhel/libguestfs-tools-c package and not the virt:rhel/libguestfs-tools-c package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1