CVE-2022-50227
- Source
- https://nvd.nist.gov/vuln/detail/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
- 2025-10-16T07:10:37.826283Z
- 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 kvmxeninittimer() is called on every KVMXENVCPUATTRTYPETIMER, 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: xentimercallbac0 RIP: 0010:debugprintobject+0x16e/0x250 lib/debugobjects.c:502 Call Trace: _debugobjectinit debughrtimerinit debuginit hrtimerinit kvmxeninittimer kvmxenvcpusetattr kvmarchvcpuioctl kvmvcpuioctl vfsioctl
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced536395260582be7443b0b35b0bbb89ffe3947f62Fixed9a9b5771e930f408c3419799000f76a9abaf2278
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced536395260582be7443b0b35b0bbb89ffe3947f62Fixedaf735db31285fa699384c649be72a9f32ecbb665