NULL Pointer Dereference Affecting qemu-kvm-block-curl package, versions <17:7.0.0-13.el9


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.1% (43rd percentile)

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  • Snyk IDSNYK-ALMALINUX9-QEMUKVMBLOCKCURL-5657068
  • 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)
First added by Snyk

How to fix?

Upgrade AlmaLinux:9 qemu-kvm-block-curl to version 17:7.0.0-13.el9 or higher.
This issue was patched in ALSA-2022:7967.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm-block-curl package and not the qemu-kvm-block-curl package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 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