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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-3975 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/security/cve/CVE-2021-3975 CVE, Inc., Red Hat Issue Tracking  Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2024326 CVE, Inc., Red Hat Issue Tracking  Patch  Third Party Advisory 
https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7 CVE, Inc., Red Hat Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html CVE, Inc., Red Hat
https://security.netapp.com/advisory/ntap-20221201-0002/ CVE, Inc., Red Hat Third Party Advisory 
https://ubuntu.com/security/CVE-2021-3975 CVE, Inc., Red Hat Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST   Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-3975
NVD Published Date:
08/23/2022
NVD Last Modified:
11/21/2024
Source:
Red Hat, Inc.