Use After Free Affecting python3-libnbd package, versions <0:1.6.0-5.module+el8.6.0+20664+3dcf7c70


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.21% (65th percentile)

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  • Snyk IDSNYK-ORACLE8-PYTHON3LIBNBD-2831459
  • 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:8 python3-libnbd to version 0:1.6.0-5.module+el8.6.0+20664+3dcf7c70 or higher.
This issue was patched in ELSA-2022-1759.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-libnbd package and not the python3-libnbd package as distributed by Oracle. See How to fix? for Oracle:8 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 Base Scores

version 3.1