---
id: CVE-2026-90411
title: |-
  In 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
summary: |-
  In 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 orig…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e399441de9115cd472b8ace6c517708273ca7997 <
    c0892cfb60a75e2c86ba8e2127b133f6549c12b3
  - >-
    Linux >= e399441de9115cd472b8ace6c517708273ca7997 <
    5e820d04c241c81a47e1940349018690e93d8167
  - >-
    Linux >= e399441de9115cd472b8ace6c517708273ca7997 <
    bb0251991420c25e3ceeac40ea09250d79ed7ef0
  - >-
    Linux >= e399441de9115cd472b8ace6c517708273ca7997 <
    acc173608ca7abe5dee8983086b44efd8b0dbc84
  - >-
    Linux >= e399441de9115cd472b8ace6c517708273ca7997 <
    18c5781ed8bc2f423c26ec93e47e2057cd76a783
  - >-
    Linux >= e399441de9115cd472b8ace6c517708273ca7997 <
    bd764baf82bb46e958a0bd0b481630dd71313055
  - >-
    Linux >= e399441de9115cd472b8ace6c517708273ca7997 <
    be5eb47ee3fea338efae1a5b678d6bb5f0fcc931
  - >-
    Linux >= e399441de9115cd472b8ace6c517708273ca7997 <
    f49d0c3a8d56a7cda1628ae17341a4a42063563c
  - Linux 4.10
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:41.077'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90411'
references:
  - url: 'https://git.kernel.org/stable/c/18c5781ed8bc2f423c26ec93e47e2057cd76a783'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5e820d04c241c81a47e1940349018690e93d8167'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/acc173608ca7abe5dee8983086b44efd8b0dbc84'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bb0251991420c25e3ceeac40ea09250d79ed7ef0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bd764baf82bb46e958a0bd0b481630dd71313055'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/be5eb47ee3fea338efae1a5b678d6bb5f0fcc931'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c0892cfb60a75e2c86ba8e2127b133f6549c12b3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f49d0c3a8d56a7cda1628ae17341a4a42063563c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.797Z'
epss: 0.0021
epssPercentile: 0.10001
---

## Overview

In 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().

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.