Improper Locking Affecting virt:rhel/libguestfs-gfs2 package, versions <1:1.40.2-28.module+el8.5.0+10717+67be7ac4


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.33% (72nd percentile)

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  • Snyk IDSNYK-RHEL8-VIRT-4137231
  • published28 Jul 2021
  • disclosed21 Jul 2021

Introduced: 21 Jul 2021

CVE-2021-3667  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade RHEL:8 virt:rhel/libguestfs-gfs2 to version 1:1.40.2-28.module+el8.5.0+10717+67be7ac4 or higher.
This issue was patched in RHSA-2021:4191.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt:rhel/libguestfs-gfs2 package and not the virt:rhel/libguestfs-gfs2 package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1