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… (CVE-2026-64020)
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.
AI Analysis
Technical Summary
The Linux kernel nvme-pci driver had a vulnerability (CVE-2026-64020) where dma_vec allocations were leaked because p2p memory was not unmapped and thus not tracked properly. This caused a resource leak on completion of operations involving p2p memory. The issue has been fixed by correcting the handling of dma_vec allocations to prevent the leak.
Potential Impact
The impact is a resource leak in kernel memory allocations related to dma_vec structures when using p2p memory in the nvme-pci driver. While no direct exploitation or active attacks are known, such leaks can degrade system stability or performance over time.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability. Users should update their Linux kernel to a version that includes this fix. Patch status is not explicitly stated in the provided data; therefore, check the official Linux kernel advisories or vendor updates for the exact fixed versions and apply the update accordingly.
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… (CVE-2026-64020)
Description
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.
CVSS v3.1
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel nvme-pci driver had a vulnerability (CVE-2026-64020) where dma_vec allocations were leaked because p2p memory was not unmapped and thus not tracked properly. This caused a resource leak on completion of operations involving p2p memory. The issue has been fixed by correcting the handling of dma_vec allocations to prevent the leak.
Potential Impact
The impact is a resource leak in kernel memory allocations related to dma_vec structures when using p2p memory in the nvme-pci driver. While no direct exploitation or active attacks are known, such leaks can degrade system stability or performance over time.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability. Users should update their Linux kernel to a version that includes this fix. Patch status is not explicitly stated in the provided data; therefore, check the official Linux kernel advisories or vendor updates for the exact fixed versions and apply the update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vrp7-59vv-qgvc
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64020"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27aa2a4a8d598912d541
Added to database: 07/19/2026, 19:38:18 UTC
Last enriched: 07/19/2026, 19:58:18 UTC
Last updated: 07/20/2026, 19:41:22 UTC
Views: 10
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