VDB
DEBIAN-CVE-2021-3975
DEBIAN-CVE-2021-3975
PUBLISHED
CVSS 6.5 MEDIUM
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.
Risk Scores
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | libvirt | 0, 0, 0 |
| Debian:14 | libvirt | 0, 0, 0 |
| Debian:11 | libvirt | 7.0.0-3, 7.0.0-3, 7.0.0-3 |
| Debian:12 | libvirt | 0, 0, 0 |
Timeline
- Aug 23, 2022 CVE Published
- Apr 28, 2026 CVE Updated