Vulnerability Monitor

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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.

Published

2022-08-23T20:15:08.427

Last Modified

2024-11-21T06:23:17.217

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

Weaknesses

Type: Secondary
CWE-416
Type: Secondary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	redhat	libvirt	< 7.1.0	Yes
Operating System	canonical	ubuntu_linux	21.10	Yes
Operating System	fedoraproject	fedora	35	Yes
Operating System	redhat	enterprise_linux	8.0	Yes
Operating System	redhat	enterprise_linux_eus	8.6	Yes
Operating System	redhat	enterprise_linux_for_ibm_z_systems	8.0	Yes
Operating System	redhat	enterprise_linux_for_ibm_z_systems_eus	8.6	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian	8.0	Yes
Operating System	redhat	enterprise_linux_for_power_little_endian_eus	8.6	Yes
Operating System	redhat	enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions	8.6	Yes
Operating System	redhat	enterprise_linux_server_tus	8.6	Yes
Application	redhat	codeready_linux_builder	-	Yes
Operating System	redhat	enterprise_linux	8.0	No
Operating System	redhat	enterprise_linux_eus	8.6	No
Operating System	redhat	enterprise_linux_for_ibm_z_systems	8.0	No
Operating System	redhat	enterprise_linux_for_ibm_z_systems_eus	8.6	No
Operating System	redhat	enterprise_linux_for_power_little_endian	8.0	No
Operating System	redhat	enterprise_linux_for_power_little_endian_eus	8.6	No
Operating System	debian	debian_linux	10.0	Yes
Operating System	debian	debian_linux	11.0	Yes
Application	netapp	ontap_select_deploy_administration_utility	-	Yes

References

https://access.redhat.com/security/cve/CVE-2021-3975 Issue Tracking, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=2024326 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7 Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html ([email protected])
https://security.netapp.com/advisory/ntap-20221201-0002/ Third Party Advisory ([email protected])
https://ubuntu.com/security/CVE-2021-3975 Patch, Third Party Advisory ([email protected])
https://access.redhat.com/security/cve/CVE-2021-3975 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=2024326 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20221201-0002/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://ubuntu.com/security/CVE-2021-3975 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)