PT-2022-6256 · Linux+9 · Linux Kernel+9

Kazuki Takiguchi · Published 2022-11-23 · Updated 2025-04-24 · CVE-2022-45869

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 6.1-rc6

Description A race condition in the x86 KVM subsystem allows guest OS users to cause a denial of service, resulting in a host OS crash or host OS memory corruption when nested virtualisation and the TDP MMU are enabled.

Recommendations For Linux kernel versions through 6.1-rc6, as a temporary workaround, consider disabling nested virtualisation and the TDP MMU to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

ALSA-2023:4377

ALSA-2023:4378

ALSA-2023:7077

ALT-PU-2022-3364

ALT-PU-2022-3371

ALT-PU-2023-1023

ALT-PU-2023-1064

ALT-PU-2023-1684

ALT-PU-2023-1741

ALT-PU-2023-1814

ALT-PU-2023-4894

AZL-11574

BDU:2023-00670

CESA-2023_6901

CESA-2023_7077

CVE-2022-45869

MGASA-2022-0477

MGASA-2022-0478

OPENSUSE-SU-2022_4504-1

OPENSUSE-SU-2022_4585-1

OPENSUSE-SU-2022_4617-1

RHSA-2023:4377

RHSA-2023:4378

RHSA-2023:6901

RHSA-2023:7077

RHSA-2023_4377

RHSA-2023_4378

RHSA-2023_6901

RHSA-2023_7077

RHSA-2024:1188

RHSA-2024:1404

RLSA-2023:4378

SUSE-SU-2022:4504-1

SUSE-SU-2022:4585-1

SUSE-SU-2022:4617-1

USN-5911-1

USN-5912-1

USN-5929-1

USN-5935-1

USN-5938-1

USN-5941-1

USN-5950-1

USN-5962-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Linuxmint

Linux Kernel

Red Hat

Rocky Linux

Suse

Ubuntu

References · 638

• 🔥 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=47b0c2e4c220f2251fd8dcfbb44479819c715e15 · Exploit
• https://ubuntu.com/security/notices/USN-5911-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5935-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5912-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-3521 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-45869 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5962-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-47519 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2023:4377 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5935-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5938-1 · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2023:4378 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:4504-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2023-0303SE17MD · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-47521 · Vendor Advisory