# CVE-2026-64019: linux: In the Linux kernel, the following vulnerability has been resolved:  nvme-pci: fix dma mapping leak on data setup err...

CVE-2026-64019 is fixed in linux on 1 platform by DEBIAN-CVE-2026-64019 (version 7.0.12-1), released July 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-64019
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 19, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  nvme-pci: fix dma mapping leak on data setup error  We're leaking the initial DMA mapping during iteration if we fail to allocate the tracking descriptor for both PRP and SGL. Unmap the iterator directly; we can't use the existing unmap helper because it depends on the tracking descriptor being successfully allocated, so a new one for an in-use iterator is provided.  The mappings were also leaking when the driver detects an invalid bio_vec when mapping PRPs, so fix that too.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.0.12-1 | [DEBIAN-CVE-2026-64019](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64019.md) | Jul 20, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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