CVE-2021-3975
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.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Modified - secalert@redhat.com
- Published
- 2022-08-23
- Last modified
- 2024-08-03
- Weaknesses
- CWE-416
Affected products
- Ubuntu Linux (Canonical)
- Debian Linux (Debian)
- Fedora (Fedoraproject)
- Ontap Select Deploy Administration Utility (Netapp)
- Codeready Linux Builder (Redhat)
- Enterprise Linux (Redhat)
- Enterprise Linux Eus (Redhat)
- Enterprise Linux For Ibm Z Systems (Redhat)
- Enterprise Linux For Ibm Z Systems Eus (Redhat)
- Enterprise Linux For Power Little Endian (Redhat)
- Enterprise Linux For Power Little Endian Eus (Redhat)
- Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions (Redhat)
- Enterprise Linux Server Tus (Redhat)
- Libvirt (Redhat)
References
- https://access.redhat.com/security/cve/CVE-2021-3975
- https://bugzilla.redhat.com/show_bug.cgi?id=2024326
- https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
- https://security.netapp.com/advisory/ntap-20221201-0002/
- https://ubuntu.com/security/CVE-2021-3975
