nvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90411
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:41 UTC
Updated2026-10-19 09:19:35 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: nvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request __nvme_fc_init_request() maps cmd_iu and then rsp_iu for DMA. If the rsp_iu mapping fails, the original code only recorded the error and fell through: it left the already-mapped cmd_iu unmapped and still marked the op as FCPOP_STATE_IDLE before returning. Since blk-mq does not call .exit_request() when .init_request() fails, the cmd_iu mapping is leaked for every op whose rsp_iu mapping fails. Jump to an error path on rsp_iu mapping failure that unmaps cmd_iu and returns the error without marking the op idle, so it stays in the FCPOP_STATE_UNINIT state set by the initial memset().

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e399441de9115cd472b8ace6c517708273ca7997 c0892cfb60a75e2c86ba8e2127b133f6549c12b3 git Not specified
CNA Linux Linux affected e399441de9115cd472b8ace6c517708273ca7997 5e820d04c241c81a47e1940349018690e93d8167 git Not specified
CNA Linux Linux affected e399441de9115cd472b8ace6c517708273ca7997 bb0251991420c25e3ceeac40ea09250d79ed7ef0 git Not specified
CNA Linux Linux affected e399441de9115cd472b8ace6c517708273ca7997 acc173608ca7abe5dee8983086b44efd8b0dbc84 git Not specified
CNA Linux Linux affected e399441de9115cd472b8ace6c517708273ca7997 18c5781ed8bc2f423c26ec93e47e2057cd76a783 git Not specified
CNA Linux Linux affected e399441de9115cd472b8ace6c517708273ca7997 bd764baf82bb46e958a0bd0b481630dd71313055 git Not specified
CNA Linux Linux affected e399441de9115cd472b8ace6c517708273ca7997 be5eb47ee3fea338efae1a5b678d6bb5f0fcc931 git Not specified
CNA Linux Linux affected e399441de9115cd472b8ace6c517708273ca7997 f49d0c3a8d56a7cda1628ae17341a4a42063563c git Not specified
CNA Linux Linux affected 4.10 Not specified
CNA Linux Linux unaffected 4.10 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/bb0251991420c25e3ceeac40ea09250d79ed7ef0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5e820d04c241c81a47e1940349018690e93d8167 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c0892cfb60a75e2c86ba8e2127b133f6549c12b3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/be5eb47ee3fea338efae1a5b678d6bb5f0fcc931 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bd764baf82bb46e958a0bd0b481630dd71313055 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/18c5781ed8bc2f423c26ec93e47e2057cd76a783 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/acc173608ca7abe5dee8983086b44efd8b0dbc84 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f49d0c3a8d56a7cda1628ae17341a4a42063563c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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