CVEvulnerability
CVE-2021-3975
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2022-08-23
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-416
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 configurations
• redhat libvirt (< 7.1.0)
• canonical ubuntu linux 21.10
• fedoraproject fedora 35
• redhat enterprise linux 8.0
• redhat enterprise linux eus 8.6
• redhat enterprise linux for ibm z systems 8.0
• redhat enterprise linux for ibm z systems eus 8.6
• redhat enterprise linux for power little endian 8.0
• redhat enterprise linux for power little endian eus 8.6
• redhat enterprise linux server for power little endian update services for sap solutions 8.6
• redhat enterprise linux server tus 8.6
• redhat codeready linux builder
• debian debian linux 10.0
• debian debian linux 11.0
• netapp ontap select deploy administration utility
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://access.redhat.com/security/cve/CVE-2021-3975 Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2024326 Issue Tracking, Patch, Third Party Advisory
- https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html lists.debian.org
- https://security.netapp.com/advisory/ntap-20221201-0002/ Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3975 Patch, Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2021-3975 Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2024326 Issue Tracking, Patch, Third Party Advisory
- https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html lists.debian.org
- https://security.netapp.com/advisory/ntap-20221201-0002/ Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3975 Patch, Third Party Advisory