Vulnerability details
CVE-2022-50227
Linux Linux
KVM: x86/xen: Initialize Xen timer only once
CVSS 3.1
7.8High
Official description
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
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 5.19 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 536395260582be7443b0b35b0bbb89ffe3947f62 ≤ v < 9a9b5771e930f408c3419799000f76a9abaf2278 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 536395260582be7443b0b35b0bbb89ffe3947f62 ≤ v < af735db31285fa699384c649be72a9f32ecbb665 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2025-06-18
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.2%
Probability of exploitation in 30 days
10.5%
Percentile (among all CVEs)
Weaknesses (CWE)
- —