CVE-2026-98578 - Vulnerability Details

- nfc: st21nfca: validate ISO15693 inventory length

Description

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

nfc: st21nfca: validate ISO15693 inventory length

The ISO15693 inventory helper removes a two-byte prefix without checking
that it exists, then accepts a one-byte remainder before reading data[1] as
the DSFID.

Require the prefix and at least two remaining bytes before copying the UID
data and reading the DSFID.

Published: 2026-10-18

Score: 6.5 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
`7974728094d35f38775417a26d8f30ea3602496a`	affected	< e47b2a350bb0ff123434ec5484c6dc3333b0727c
`7974728094d35f38775417a26d8f30ea3602496a`	affected	< 57d183764f3002f9625ee4deeeb20716c519534e
`7974728094d35f38775417a26d8f30ea3602496a`	affected	< 3af2ea4035581a1607d9830779c187a0c7e225aa
`7974728094d35f38775417a26d8f30ea3602496a`	affected	< 9fa21b0f78adb514e3bd96a505ddb752e9727ff3
`7974728094d35f38775417a26d8f30ea3602496a`	affected	< 6353dae51bc9b3cad13c9d890b53311a46c96b4e
`7974728094d35f38775417a26d8f30ea3602496a`	affected	< fdd95e819d828c975aaeb258a3fed5dd7fd136d0
`7974728094d35f38775417a26d8f30ea3602496a`	affected	< a86987d03a4d39acdbe4533d83db4d656ea36c59
`7974728094d35f38775417a26d8f30ea3602496a`	affected	< 7f2ea5ed588c03d481f0301e6c3d4240132383fb

Linux

affected

Version	Status	Constraints
`3.16`	affected	—
`0`	unaffected	< 3.16
`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
`[7974728094d35f38775417a26d8f30ea3602496a,e47b2a350bb0ff123434ec5484c6dc3333b0727c)`	affected	code_commit	—
`[7974728094d35f38775417a26d8f30ea3602496a,57d183764f3002f9625ee4deeeb20716c519534e)`	affected	code_commit	—
`[7974728094d35f38775417a26d8f30ea3602496a,3af2ea4035581a1607d9830779c187a0c7e225aa)`	affected	code_commit	—
`[7974728094d35f38775417a26d8f30ea3602496a,9fa21b0f78adb514e3bd96a505ddb752e9727ff3)`	affected	code_commit	—
`[7974728094d35f38775417a26d8f30ea3602496a,6353dae51bc9b3cad13c9d890b53311a46c96b4e)`	affected	code_commit	—
`[7974728094d35f38775417a26d8f30ea3602496a,fdd95e819d828c975aaeb258a3fed5dd7fd136d0)`	affected	code_commit	—
`[7974728094d35f38775417a26d8f30ea3602496a,a86987d03a4d39acdbe4533d83db4d656ea36c59)`	affected	code_commit	—
`[7974728094d35f38775417a26d8f30ea3602496a,7f2ea5ed588c03d481f0301e6c3d4240132383fb)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`3.16`	affected	generic	—
`[0,3.16)`	unaffected	semver	—
`[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-rc5,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

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-2026-98578.mbox
https://git.kernel.org/stable/c/3af2ea4035581a1607d9830779c187a0c7e225aa
https://git.kernel.org/stable/c/57d183764f3002f9625ee4deeeb20716c519534e
https://git.kernel.org/stable/c/6353dae51bc9b3cad13c9d890b53311a46c96b4e
https://git.kernel.org/stable/c/7f2ea5ed588c03d481f0301e6c3d4240132383fb
https://git.kernel.org/stable/c/9fa21b0f78adb514e3bd96a505ddb752e9727ff3
https://git.kernel.org/stable/c/a86987d03a4d39acdbe4533d83db4d656ea36c59
https://git.kernel.org/stable/c/e47b2a350bb0ff123434ec5484c6dc3333b0727c
https://git.kernel.org/stable/c/fdd95e819d828c975aaeb258a3fed5dd7fd136d0
https://nvd.nist.gov/vuln/detail/CVE-2026-98578
https://www.cve.org/CVERecord?id=CVE-2026-98578

History

Tue, 20 Oct 2026 21:00:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-200

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

Type	Values Removed	Values Added
References		https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98578.mbox https://nvd.nist.gov/vuln/detail/CVE-2026-98578 https://www.cve.org/CVERecord?id=CVE-2026-98578
Metrics	threat_severity `None`	cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/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-125 CWE-200

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: st21nfca: validate ISO15693 inventory length The ISO15693 inventory helper removes a two-byte prefix without checking that it exists, then accepts a one-byte remainder before reading data[1] as the DSFID. Require the prefix and at least two remaining bytes before copying the UID data and reading the DSFID.
Title		nfc: st21nfca: validate ISO15693 inventory length
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/3af2ea4035581a1607d9830779c187a0c7e225aa https://git.kernel.org/stable/c/57d183764f3002f9625ee4deeeb20716c519534e https://git.kernel.org/stable/c/6353dae51bc9b3cad13c9d890b53311a46c96b4e https://git.kernel.org/stable/c/7f2ea5ed588c03d481f0301e6c3d4240132383fb https://git.kernel.org/stable/c/9fa21b0f78adb514e3bd96a505ddb752e9727ff3 https://git.kernel.org/stable/c/a86987d03a4d39acdbe4533d83db4d656ea36c59 https://git.kernel.org/stable/c/e47b2a350bb0ff123434ec5484c6dc3333b0727c https://git.kernel.org/stable/c/fdd95e819d828c975aaeb258a3fed5dd7fd136d0

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-10-18T15:18:51.807Z

Updated: 2026-10-19T09:22:03.614Z

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

Link: CVE-2026-98578

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-10-18T16:17:10.223

Modified: 2026-10-19T10:19:17.060

Link: CVE-2026-98578

Redhat

Severity : Moderate

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

Links: CVE-2026-98578 - Bugzilla

OpenCVE Enrichment

Updated: 2026-10-20T20:45:14Z

Weaknesses

CWE-125
Out-of-bounds Read

Tracking

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Subscriptions

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