Bug 2516923 (CVE-2026-74361)

Summary: CVE-2026-74361 kernel: nvme: fix FDP fdpcidx bounds check
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: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the NVMe (Non-Volatile Memory Express) subsystem of the Linux kernel. An incorrect bounds check in the Flexible Data Placement (FDP) `fdpcidx` function allows an out-of-bounds access. This occurs because the check incorrectly accepts an index value that is beyond the intended boundary. This vulnerability could potentially lead to system instability or other unspecified impacts.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-08-15 06:40:35 UTC
In the Linux kernel, the following vulnerability has been resolved:

nvme: fix FDP fdpcidx bounds check

The fdpcidx bounds check sets n = NUMFDPC + 1 but used > instead of >=,
incorrectly accepting fdp_idx when it equals n (i.e. NUMFDPC + 1).