iommu/riscv: Serialize command queue publishing

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98004
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:28 UTC
Updated2026-09-25 11:17:28 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Serialize command queue publishing Serialize command queue publishing so software producer state advances only after a command is written and the hardware tail is updated. Wait for hardware consumption outside the queue lock when the command queue is full so other CPUs are not blocked behind a long poll.

Risk And Classification

EPSS: 0.001550000 probability, percentile 0.039750000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 856c0cfe5c5f6a2cc8d995872eb67bff9c68c57c 6d4c12ab9ab8db87411c863a54e0e97f9197afde git Not specified
CNA Linux Linux affected 856c0cfe5c5f6a2cc8d995872eb67bff9c68c57c ca58afa40946acd252a50fa4d4a86f15847a3d7d git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ca58afa40946acd252a50fa4d4a86f15847a3d7d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6d4c12ab9ab8db87411c863a54e0e97f9197afde 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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