A NULL pointer dereference was found in the Linux kernel's KVM when dirty ring logging is enabled without an active vCPU context. An unprivileged local attacker on the host may use this flaw to cause a kernel oops condition and thus a denial of service by issuing a KVM_XEN_HVM_SET_ATTR ioctl. This flaw affects Linux kernel versions prior to 5.17-rc1.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2022-03-08T14:05:00

Updated: 2024-08-03T17:16:03.545Z

Reserved: 2021-12-10T00:00:00

Link: CVE-2021-4095

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-03-10T17:44:53.563

Modified: 2023-11-07T03:40:10.533

Link: CVE-2021-4095

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-10-19T00:00:00Z

Links: CVE-2021-4095 - Bugzilla