Bug 2363497 (CVE-2022-49774)

Summary: CVE-2022-49774 kernel: KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-05-01 15:07:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign()

Should not call eventfd_ctx_put() in case of error.

[Introduce new goto target instead. - Paolo]
Comment 1 Avinash Hanwate 2025-05-02 05:11:35 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050116-CVE-2022-49774-e5d3@gregkh/T