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CVE-2021-3975

Published: Aug 23, 2022

Modified: Aug 3, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	libvirt	affected `Fixed in libvirt v7.1.0`

Weaknesses (CWE)

References

https://bugzilla.redhat.com/show_bug.cgi?id=2024326

https://access.redhat.com/security/cve/CVE-2021-3975

https://ubuntu.com/security/CVE-2021-3975

https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7

https://security.netapp.com/advisory/ntap-20221201-0002/

[debian-lts-announce] 20240401 [SECURITY] [DLA 3778-1] libvirt security update

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