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
Updated2026-10-15 11:17:38 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

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.001550000 probability, percentile 0.052160000 (date 2026-08-02)

Problem Types: CWE-401

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel 7.1 rc1 All All
Operating System Linux Linux Kernel 7.1 rc2 All All
Operating System Linux Linux Kernel 7.1 rc3 All All
Operating System Linux Linux Kernel 7.1 rc4 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2 fba32257979dda14b0d8ed7402490ae0be44972a git Not specified
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 6.18.57 6.18.* 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 Patch
git.kernel.org/stable/c/fba32257979dda14b0d8ed7402490ae0be44972a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e50db059ec8e63bc50b1cc039e2502cb5ea75a70 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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