Linux Kernel up to 7.2.5 nvme-fc __nvme_fc_init_request denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k1.19+

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 7.2.5. This affects the function __nvme_fc_init_request of the component nvme-fc. Such manipulation leads to denial of service. This vulnerability is traded as CVE-2026-90411. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 7.2.5. Affected by this issue is the function __nvme_fc_init_request of the component nvme-fc. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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().

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-90411 since 09/11/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/17/2026). The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch c0892cfb60a75e2c86ba8e2127b133f6549c12b3/5e820d04c241c81a47e1940349018690e93d8167/bb0251991420c25e3ceeac40ea09250d79ed7ef0/acc173608ca7abe5dee8983086b44efd8b0dbc84/18c5781ed8bc2f423c26ec93e47e2057cd76a783/bd764baf82bb46e958a0bd0b481630dd71313055/be5eb47ee3fea338efae1a5b678d6bb5f0fcc931/f49d0c3a8d56a7cda1628ae17341a4a42063563c is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: c0892cfb60a75e2c86ba8e2127b133f6549c12b3/5e820d04c241c81a47e1940349018690e93d8167/bb0251991420c25e3ceeac40ea09250d79ed7ef0/acc173608ca7abe5dee8983086b44efd8b0dbc84/18c5781ed8bc2f423c26ec93e47e2057cd76a783/bd764baf82bb46e958a0bd0b481630dd71313055/be5eb47ee3fea338efae1a5b678d6bb5f0fcc931/f49d0c3a8d56a7cda1628ae17341a4a42063563c

Timelineinfo

09/11/2026 CVE reserved
09/17/2026 +6 days Advisory disclosed
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90411 (🔒)
GCVE (CVE): GCVE-0-2026-90411
GCVE (VulDB): GCVE-100-406964

Entryinfo

Created: 09/17/2026 22:17
Changes: 09/17/2026 22:17 (59)
Complete: 🔍
Cache ID: 216::103

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