nvme-pci: fix dma mapping leak on data setup error

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64019
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:41 UTC
Updated2026-07-19 16:17:41 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.001550000 probability, percentile 0.051060000 (date 2026-07-20)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2 e50db059ec8e63bc50b1cc039e2502cb5ea75a70 git Not specified
CNA Linux Linux affected 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2 1bf86336e4b6cf40873fda47a7fe191446864937 git Not specified
CNA Linux Linux affected 6.17 Not specified
CNA Linux Linux unaffected 6.17 semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/1bf86336e4b6cf40873fda47a7fe191446864937 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e50db059ec8e63bc50b1cc039e2502cb5ea75a70 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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