Use After Free Affecting libvirt-daemon-driver-storage-iscsi package, versions <0:5.7.0-34.el7


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.3% (71st percentile)

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  • Snyk IDSNYK-ORACLE7-LIBVIRTDAEMONDRIVERSTORAGEISCSI-2964878
  • published18 May 2022
  • disclosed23 Aug 2022

Introduced: 18 May 2022

CVE-2021-3975  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:7 libvirt-daemon-driver-storage-iscsi to version 0:5.7.0-34.el7 or higher.
This issue was patched in ELSA-2022-9668.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt-daemon-driver-storage-iscsi package and not the libvirt-daemon-driver-storage-iscsi package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

CVSS Scores

version 3.1