Bug 2536492 (CVE-2026-92478)

Summary: CVE-2026-92478 kernel: scsi: ufs: core: Validate connected lane counts
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: 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 Linux kernel. The Universal Flash Storage (UFS) core component does not properly validate connected lane counts. This could allow a local attacker to provide specially crafted input, leading to out-of-range memory access when processing Universal Flash Storage (UFS) commands. This may result in system instability or a denial of service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-09-17 18:12:20 UTC
In the Linux kernel, the following vulnerability has been resolved:

scsi: ufs: core: Validate connected lane counts

The connected lane count is used by TX equalization code to index arrays
sized by UFS_MAX_LANES. Reject zero and out-of-range RX or TX lane counts
before they can be propagated.