CVE-2022-50227
- Source
- https://cve.org/CVERecord?id=CVE-2022-50227
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50227.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-50227
- Downstream
- Published
- 2025-06-18T11:03:59Z
- Modified
- 2026-08-12T03:30:09Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- KVM: x86/xen: Initialize Xen timer only once
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86/xen: Initialize Xen timer only once
Add a check for existing xen timers before initializing a new one.
Currently kvm_xen_init_timer() is called on every KVM_XEN_VCPU_ATTR_TYPE_TIMER, which is causing the following ODEBUG crash when vcpu->arch.xen.timer is already set.
ODEBUG: init active (active state 0) object type: hrtimer hint: xen_timer_callbac0 RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:502 Call Trace: __debug_object_init debug_hrtimer_init debug_init hrtimer_init kvm_xen_init_timer kvm_xen_vcpu_set_attr kvm_arch_vcpu_ioctl kvm_vcpu_ioctl vfs_ioctl
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50227.json" }- References
-
- https://git.kernel.org/stable/c/9a9b5771e930f408c3419799000f76a9abaf2278
- https://git.kernel.org/stable/c/af735db31285fa699384c649be72a9f32ecbb665
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50227.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-50227
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git