CVE-2026-98583 - Vulnerability Details

- nfc: nfcmrvl: validate helper command length before pull

Description

In the Linux kernel, the following vulnerability has been resolved:

nfc: nfcmrvl: validate helper command length before pull

The firmware download receive path removes the NCI data header and
reads the helper command before validating the remaining packet length.
A short frame can therefore reach the data access before the malformed
packet is rejected.

Validate the complete helper command length before stripping the NCI
data header.

Published: 2026-10-18

Score: 4.4 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`3194c6870158e305dac2af52f83681e9cb67280f`	affected	< 842c0603cfa49530ef081f181a2ddbba77a37231
`3194c6870158e305dac2af52f83681e9cb67280f`	affected	< e4b012240c8aaf57cec192234c24e0db5f531ffa
`3194c6870158e305dac2af52f83681e9cb67280f`	affected	< f15ad9d6e9173a037587dded77c904fdae8df380
`3194c6870158e305dac2af52f83681e9cb67280f`	affected	< a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9
`3194c6870158e305dac2af52f83681e9cb67280f`	affected	< 4d4601e182c8567329be7d919669ec4d847ddd93
`3194c6870158e305dac2af52f83681e9cb67280f`	affected	< ed2e00bb22c73156bf8030b6204deabb25cf4eb5
`3194c6870158e305dac2af52f83681e9cb67280f`	affected	< 6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c
`3194c6870158e305dac2af52f83681e9cb67280f`	affected	< 686f942332b1667f13f3b8d6a2f50bcfbf42e277

Linux

affected

Version	Status	Constraints
`4.4`	affected	—
`0`	unaffected	< 4.4
`5.10.271`	unaffected	≤ 5.10.*
`5.15.222`	unaffected	≤ 5.15.*
`6.1.189`	unaffected	≤ 6.1.*
`6.6.158`	unaffected	≤ 6.6.*
`6.12.112`	unaffected	≤ 6.12.*
`6.18.55`	unaffected	≤ 6.18.*
`7.2.9`	unaffected	≤ 7.2.*
`7.3`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[3194c6870158e305dac2af52f83681e9cb67280f,842c0603cfa49530ef081f181a2ddbba77a37231)`	affected	code_commit	—
`[3194c6870158e305dac2af52f83681e9cb67280f,e4b012240c8aaf57cec192234c24e0db5f531ffa)`	affected	code_commit	—
`[3194c6870158e305dac2af52f83681e9cb67280f,f15ad9d6e9173a037587dded77c904fdae8df380)`	affected	code_commit	—
`[3194c6870158e305dac2af52f83681e9cb67280f,a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9)`	affected	code_commit	—
`[3194c6870158e305dac2af52f83681e9cb67280f,4d4601e182c8567329be7d919669ec4d847ddd93)`	affected	code_commit	—
`[3194c6870158e305dac2af52f83681e9cb67280f,ed2e00bb22c73156bf8030b6204deabb25cf4eb5)`	affected	code_commit	—
`[3194c6870158e305dac2af52f83681e9cb67280f,6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c)`	affected	code_commit	—
`[3194c6870158e305dac2af52f83681e9cb67280f,686f942332b1667f13f3b8d6a2f50bcfbf42e277)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`4.4`	affected	generic	—
`[0,4.4)`	unaffected	generic	—
`[5.10.271,5.11.0)`	unaffected	semver	—
`[5.15.222,5.16.0)`	unaffected	semver	—
`[6.1.189,6.2.0)`	unaffected	semver	—
`[6.6.158,6.7.0)`	unaffected	semver	—
`[6.12.112,6.13.0)`	unaffected	semver	—
`[6.18.55,6.19.0)`	unaffected	semver	—
`[7.2.9,7.3.0)`	unaffected	semver	—
`[7.3,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
Debian DLA	DLA-4850-1	linux-6.12 security update

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0021.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98583.mbox
https://git.kernel.org/stable/c/4d4601e182c8567329be7d919669ec4d847ddd93
https://git.kernel.org/stable/c/686f942332b1667f13f3b8d6a2f50bcfbf42e277
https://git.kernel.org/stable/c/6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c
https://git.kernel.org/stable/c/842c0603cfa49530ef081f181a2ddbba77a37231
https://git.kernel.org/stable/c/a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9
https://git.kernel.org/stable/c/e4b012240c8aaf57cec192234c24e0db5f531ffa
https://git.kernel.org/stable/c/ed2e00bb22c73156bf8030b6204deabb25cf4eb5
https://git.kernel.org/stable/c/f15ad9d6e9173a037587dded77c904fdae8df380
https://nvd.nist.gov/vuln/detail/CVE-2026-98583
https://www.cve.org/CVERecord?id=CVE-2026-98583

History

Tue, 20 Oct 2026 12:45:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-125
References		https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98583.mbox https://nvd.nist.gov/vuln/detail/CVE-2026-98583 https://www.cve.org/CVERecord?id=CVE-2026-98583
Metrics	threat_severity `None`	cvssV3_1 `{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Sun, 18 Oct 2026 18:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-119 CWE-20

Sun, 18 Oct 2026 15:30:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: nfc: nfcmrvl: validate helper command length before pull The firmware download receive path removes the NCI data header and reads the helper command before validating the remaining packet length. A short frame can therefore reach the data access before the malformed packet is rejected. Validate the complete helper command length before stripping the NCI data header.
Title		nfc: nfcmrvl: validate helper command length before pull
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/4d4601e182c8567329be7d919669ec4d847ddd93 https://git.kernel.org/stable/c/686f942332b1667f13f3b8d6a2f50bcfbf42e277 https://git.kernel.org/stable/c/6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c https://git.kernel.org/stable/c/842c0603cfa49530ef081f181a2ddbba77a37231 https://git.kernel.org/stable/c/a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9 https://git.kernel.org/stable/c/e4b012240c8aaf57cec192234c24e0db5f531ffa https://git.kernel.org/stable/c/ed2e00bb22c73156bf8030b6204deabb25cf4eb5 https://git.kernel.org/stable/c/f15ad9d6e9173a037587dded77c904fdae8df380

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-10-18T15:18:56.360Z

Updated: 2026-10-19T09:22:09.019Z

Reserved: 2026-09-25T10:25:14.358Z

Link: CVE-2026-98583

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-10-18T16:17:10.867

Modified: 2026-10-19T10:19:19.137

Link: CVE-2026-98583

Redhat

Severity : Moderate

Publid Date: 2026-10-18T00:00:00Z

Links: CVE-2026-98583 - Bugzilla

OpenCVE Enrichment

Updated: 2026-10-20T16:45:14Z

Weaknesses

CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125
Out-of-bounds Read
CWE-20
Improper Input Validation

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Subscriptions

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