Bug 2541342 (CVE-2026-98154)

Summary: CVE-2026-98154 kernel: nvme-rdma: fix -EIO cleanup order in queue_rq
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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A flaw was found in the Linux kernel's NVMe (Non-Volatile Memory Express) over RDMA (Remote Direct Memory Access) driver. This vulnerability can lead to a Denial of Service (DoS) due to improper error cleanup during request processing. When an input/output (I/O) communication error occurs while queuing a request, the driver completes the request but subsequently performs duplicate cleanup and memory unmapping operations. A local user capable of issuing storage commands during network path errors can trigger this condition, resulting in memory corruption and a system crash.
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Description OSIDB Bzimport 2026-09-25 11:29:44 UTC
In the Linux kernel, the following vulnerability has been resolved:

nvme-rdma: fix -EIO cleanup order in queue_rq

On -EIO, the RDMA queue_rq path reports a host path error and then
still cleans up the command and unmaps the SQE DMA. The path error
helper completes the request, so that is double cleanup and DMA unmap
after the request is already complete.

Unmap the SQE first, then report the host path error. Skip the outer
command cleanup on that path.