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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
redhat
commercial·USaka red hat
canonical
commercial·GBaka canonical ltd.
fedoraproject
oss-project·USaka fedora project
debian
oss-project·GBaka debian gnu/linux
and 3 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
2 techniques Initial Access
Privilege Escalation
References
https://bugzilla.redhat.com/show_bug.cgi?id=2024326
bugzilla.redhat.com
https://access.redhat.com/security/cve/CVE-2021-3975
access.redhat.com
https://ubuntu.com/security/CVE-2021-3975
ubuntu.com
and 3 more references View all →
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