CVE-2026-90411Hinoki check available

Resource exhaustion via leaked command DMA mappings

Published Sep 17, 2026 · Updated Sep 17, 2026

A DMA mapping leak in Linux nvme-fc allows local users to exhaust kernel resources when response mapping fails during request initialization. The __nvme_fc_init_request() function leaves cmd_iu mapped after rsp_iu mapping fails, and blk-mq skips the exit_request callback on initialization failure. Exploitation requires the NVMe Fibre Channel path and response DMA mapping failures; no specific crash, hang, or reboot outcome is documented.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

A DMA mapping leak in Linux nvme-fc allows local users to exhaust kernel resources when response mapping fails during request initialization. The __nvme_fc_init_request() function leaves cmd_iu mapped after rsp_iu mapping fails, and blk-mq skips the exit_request callback on initialization failure. Exploitation requires the NVMe Fibre Channel path and response DMA mapping failures; no specific crash, hang, or reboot outcome is documented.

The record

CVE
CVE-2026-90411
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.10
  2. Affected versionversion=e399441de9115cd472b8ace6c517708273ca7997 <18c5781ed8bc2f423c26ec93e47e2057cd76a783
  3. Affected versionversion=e399441de9115cd472b8ace6c517708273ca7997 <5e820d04c241c81a47e1940349018690e93d8167
  4. Affected versionversion=e399441de9115cd472b8ace6c517708273ca7997 <acc173608ca7abe5dee8983086b44efd8b0dbc84
  5. Affected versionversion=e399441de9115cd472b8ace6c517708273ca7997 <bb0251991420c25e3ceeac40ea09250d79ed7ef0
  6. Affected versionversion=e399441de9115cd472b8ace6c517708273ca7997 <bd764baf82bb46e958a0bd0b481630dd71313055
  7. Affected versionversion=e399441de9115cd472b8ace6c517708273ca7997 <be5eb47ee3fea338efae1a5b678d6bb5f0fcc931
  8. Affected versionversion=e399441de9115cd472b8ace6c517708273ca7997 <c0892cfb60a75e2c86ba8e2127b133f6549c12b3
  9. Affected versionversion=e399441de9115cd472b8ace6c517708273ca7997 <f49d0c3a8d56a7cda1628ae17341a4a42063563c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=e399441de9115cd472b8ace6c517708273ca7997 <18c5781ed8bc2f423c26ec93e47e2057cd76a783; version=e399441de9115cd472b8ace6c517708273ca7997 <5e820d04c241c81a47e1940349018690e93d8167; version=e399441de9115cd472b8ace6c517708273ca7997 <acc173608ca7abe5dee8983086b44efd8b0dbc84; version=e399441de9115cd472b8ace6c517708273ca7997 <bb0251991420c25e3ceeac40ea09250d79ed7ef0; version=e399441de9115cd472b8ace6c517708273ca7997 <bd764baf82bb46e958a0bd0b481630dd71313055; version=e399441de9115cd472b8ace6c517708273ca7997 <be5eb47ee3fea338efae1a5b678d6bb5f0fcc931; version=e399441de9115cd472b8ace6c517708273ca7997 <c0892cfb60a75e2c86ba8e2127b133f6549c12b3; version=e399441de9115cd472b8ace6c517708273ca7997 <f49d0c3a8d56a7cda1628ae17341a4a42063563c

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-772Missing Release of Resource after Effective Lifetime
T1499.001OS Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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