NULL Pointer Dereference Affecting libguestfs-rsync package, versions <1:1.40.2-28.0.1.module+el8.5.0+20514+67db989a


Severity

Recommended
high

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-ORACLE8-LIBGUESTFSRSYNC-2812763
  • published 30 Apr 2022
  • disclosed 25 Jan 2022

How to fix?

Upgrade Oracle:8 libguestfs-rsync to version 1:1.40.2-28.0.1.module+el8.5.0+20514+67db989a or higher.
This issue was patched in ELSA-2022-9364.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libguestfs-rsync package and not the libguestfs-rsync package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The self pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.

CVSS Scores

version 3.1
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NVD

6.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

5.6 medium