Unrated severityNVD Advisory· Published Aug 23, 2022· Updated Aug 3, 2024
CVE-2021-3975
CVE-2021-3975
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.
Affected products
1- Range: Fixed in libvirt v7.1.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
6- lists.debian.org/debian-lts-announce/2024/04/msg00000.htmlmitremailing-list
- access.redhat.com/security/cve/CVE-2021-3975mitre
- bugzilla.redhat.com/show_bug.cgimitre
- github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7mitre
- security.netapp.com/advisory/ntap-20221201-0002/mitre
- ubuntu.com/security/CVE-2021-3975mitre
News mentions
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