ALT-PU-2021-1465-1
Closed vulnerabilities
Published: 2022-08-23
Modified: 2024-11-21
Modified: 2024-11-21
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.
Severity: MEDIUM (6.5)
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
- https://access.redhat.com/security/cve/CVE-2021-3975
- https://access.redhat.com/security/cve/CVE-2021-3975
- https://bugzilla.redhat.com/show_bug.cgi?id=2024326
- https://bugzilla.redhat.com/show_bug.cgi?id=2024326
- https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
- https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
- [debian-lts-announce] 20240401 [SECURITY] [DLA 3778-1] libvirt security update
- [debian-lts-announce] 20240401 [SECURITY] [DLA 3778-1] libvirt security update
- https://security.netapp.com/advisory/ntap-20221201-0002/
- https://security.netapp.com/advisory/ntap-20221201-0002/
- https://ubuntu.com/security/CVE-2021-3975
- https://ubuntu.com/security/CVE-2021-3975