Vulnerability Details : CVE-2021-4095

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.
Vulnerability category: Memory CorruptionDenial of service
Published 2022-03-10 17:44:54
Updated 2022-07-28 18:01:22
Source Red Hat, Inc.
View at NVD,

Exploit prediction scoring system (EPSS) score for CVE-2021-4095

Probability of exploitation activity in the next 30 days: 0.04%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-4095

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source

CWE ids for CVE-2021-4095

  • A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
    Assigned by:
    • (Primary)
    • (Secondary)

References for CVE-2021-4095

Products affected by CVE-2021-4095

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