CVE-2021-3975
- State
- Published
- Severity
- Not scored
- Published
- Aug 23, 2022
- Updated
- Aug 3, 2024
- Reserved
- Nov 18, 2021
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.
Scores
The record has no CVSS score.
Weaknesses
- CWE-416 Use After Free
Affected Products
| Product | Versions |
|---|---|
libvirtn/a |
|
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2024326
- https://access.redhat.com/security/cve/CVE-2021-3975
- https://ubuntu.com/security/CVE-2021-3975
- https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
- https://security.netapp.com/advisory/ntap-20221201-0002/
- [debian-lts-announce] 20240401 [SECURITY] [DLA 3778-1] libvirt security updatemailing-list
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