Bug 2513194 (CVE-2026-68134)

Summary: CVE-2026-68134 kernel: ptp: ptp_s390: Add missing facility check
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the `ptp_s390` module of the Linux kernel. This vulnerability allows the physical clock to be registered even when the necessary facility 28 is not installed or PTFF QPT is unavailable. This improper registration could lead to unexpected system behavior or a denial of service (DoS) condition.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-08-10 12:24:15 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ptp: ptp_s390: Add missing facility check

Only register the physical clock when facility 28 is installed
and PTFF QAF returns that PTFF QPT is available.