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CVE-2021-3975

CVE-2021-3975

EPSS 1.2%CWE-416
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
n/a · libvirt

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References
https://access.redhat.com/security/cve/CVE-2021-3975https://bugzilla.redhat.com/show_bug.cgi?id=2024326https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7https://lists.debian.org/debian-lts-announce/2024/04/msg00000.htmlhttps://security.netapp.com/advisory/ntap-20221201-0002/https://ubuntu.com/security/CVE-2021-3975