PT-2025-26153 · Linux+2 · Linux Kernel+2

Published 2023-05-09 · Updated 2025-06-18 · CVE-2022-50227

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 (affected versions not specified)

Description A vulnerability in the Linux kernel has been resolved, related to the initialization of Xen timers in the KVM (Kernel-based Virtual Machine) module. The issue occurred when the kvm xen init timer() function was called multiple times, causing a crash when the vcpu->arch.xen.timer was already set. This led to an ODEBUG crash with a stack trace involving debug print object(), debug object init(), debug hrtimer init(), and other functions. The fix involves adding a check for existing Xen timers before initializing a new one.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2022-50227

RHSA-2023:2458

RHSA-2023_2458

Affected Products

Astra Linux

Linux Kernel

Red Hat

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50227.json · Exploit
• https://ubuntu.com/security/CVE-2022-50227 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50227 · Vendor Advisory
• https://git.kernel.org/stable/c/af735db31285fa699384c649be72a9f32ecbb665 · Patch
• https://git.kernel.org/stable/c/9a9b5771e930f408c3419799000f76a9abaf2278 · Patch
• https://cve.org/CVERecord?id=CVE-2022-50227 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50227 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50227 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50227 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50227 · Security Note
• https://twitter.com/CVEnew/status/1935350980364878250 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://t.me/cvetracker/26499 · Telegram Post
• https://lore.kernel.org/linux-cve-announce/2025061849-CVE-2022-50227-890e@gregkh/T · Note