Out-of-bounds Write Affecting virt-devel:rhel/ocaml-libguestfs-devel package, versions <1:1.40.2-27.module_el8.4.0+2358+630e803b.alma


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ALMALINUX8-VIRTDEVEL-5647306
  • published28 May 2023
  • disclosed18 May 2021

Introduced: 18 May 2021

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

How to fix?

Upgrade AlmaLinux:8 virt-devel:rhel/ocaml-libguestfs-devel to version 1:1.40.2-27.module_el8.4.0+2358+630e803b.alma or higher.
This issue was patched in ALSA-2021:1762.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt-devel:rhel/ocaml-libguestfs-devel package and not the virt-devel:rhel/ocaml-libguestfs-devel package as distributed by AlmaLinux. See How to fix? for AlmaLinux: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