CVE-2021-4095

Updated: 2024-11-30 03:08:34.954829

Description:

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x LOW 1.9
CVSS Version 3.x MEDIUM 5.5

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

AlmaLinux 9.2 ESU kernel 5.14.0 5.5 MEDIUM Ignored 2023-11-08 04:07:42
AlmaLinux 9.2 FIPS kernel 5.14.0 5.5 MEDIUM Ignored 2023-11-21 04:12:19
CentOS 6 ELS kernel 2.6.32 5.5 MEDIUM Not Vulnerable 2022-04-24 21:35:24
CentOS 7 ELS kernel 3.10.0 5.5 MEDIUM Ignored 2023-09-19 09:30:02
CentOS 8.4 ELS kernel 4.18.0 5.5 MEDIUM Not Vulnerable 2022-04-24 21:35:24
CentOS 8.5 ELS kernel 4.18.0 5.5 MEDIUM Not Vulnerable 2022-04-24 21:35:24
CloudLinux 6 ELS kernel 2.6.32 5.5 MEDIUM Not Vulnerable 2022-04-24 21:35:24
Oracle Linux 6 ELS kernel 2.6.32 5.5 MEDIUM Not Vulnerable 2022-04-24 21:35:24
Ubuntu 16.04 ELS linux 4.4.0 5.5 MEDIUM Ignored 2022-04-24 21:35:24
Ubuntu 16.04 ELS linux-hwe 4.15.0 5.5 MEDIUM Ignored 2022-09-28 05:02:34
Total: 11