Bug 2502337 (CVE-2026-64020)

Summary: CVE-2026-64020 kernel: nvme-pci: fix dma_vecs leak on p2p memory
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: 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 Linux kernel's nvme-pci driver. This vulnerability occurs due to improper handling of peer-to-peer (P2P) memory, where dma_vec allocations are not correctly unmapped. This oversight leads to a memory leak, which can degrade system performance and potentially lead to a denial of service over an extended period.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-07-19 16:02:39 UTC
In the Linux kernel, the following vulnerability has been resolved:

nvme-pci: fix dma_vecs leak on p2p memory

We don't unmap P2P memory, so we don't need to track it. The dma_vec
allocation was getting leaked on the completion.