Out-of-bounds Write Affecting libvirt-daemon-driver-storage package, versions <0:6.0.0-35.module+el8.4.0+534+4680a14e


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ROCKY8-LIBVIRTDAEMONDRIVERSTORAGE-3294645
  • published5 Jan 2023
  • disclosed8 Dec 2020

Introduced: 8 Dec 2020

CVE-2020-27821  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 libvirt-daemon-driver-storage to version 0:6.0.0-35.module+el8.4.0+534+4680a14e or higher.
This issue was patched in RLSA-2021:1762.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt-daemon-driver-storage package and not the libvirt-daemon-driver-storage package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

CVSS Scores

version 3.1