CVE-2021-3975
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- CVE-2021-3975
CVE Details
| Release Date: | 2022-08-23 | |
| Impact: | None | What is this? |
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.
See more information about CVE-2021-3975 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 6.5 |
| Vector String: | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Version: | 3.0 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (libvirt) | ELSA-2022-9668 | 2022-08-01 |
| Oracle Linux version 7 (libvirt-python) | ELSA-2022-9668 | 2022-08-01 |
| Oracle Linux version 8 (hivex) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (hivex) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (libguestfs) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libguestfs) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (libiscsi) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libiscsi) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (libnbd) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libnbd) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (libtpms) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libvirt) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libvirt) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (nbdkit) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (nbdkit) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (netcf) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (netcf) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (seabios) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (seabios) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (sgabios) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (sgabios) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (supermin) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (supermin) | ELSA-2022-9700 | 2022-08-08 |
| Oracle Linux version 8 (swtpm) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (virt-v2v) | ELSA-2022-1759 | 2022-05-17 |
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