CVE-2026-98578Hinoki check available

Out-of-bounds read via truncated NFC inventory responses

Published Oct 18, 2026 · Updated Oct 18, 2026

Missing length checks in Linux's st21nfca NFC driver allow attackers to trigger out-of-bounds reads via short ISO15693 responses. The st21nfca_get_iso15693_inventory helper strips a two-byte prefix without verifying success, then accepts a one-byte remainder before reading data[1] as the DSFID. Reachability requires the affected NFC inventory path; the disclosure establishes an invalid read, not external data disclosure or code execution.

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

What happened

Missing length checks in Linux's st21nfca NFC driver allow attackers to trigger out-of-bounds reads via short ISO15693 responses. The st21nfca_get_iso15693_inventory helper strips a two-byte prefix without verifying success, then accepts a one-byte remainder before reading data[1] as the DSFID. Reachability requires the affected NFC inventory path; the disclosure establishes an invalid read, not external data disclosure or code execution.

The record

CVE
CVE-2026-98578
Published
Oct 18, 2026
Updated
Oct 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 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=3.16
  2. Affected versionversion=7974728094d35f38775417a26d8f30ea3602496a <3af2ea4035581a1607d9830779c187a0c7e225aa
  3. Affected versionversion=7974728094d35f38775417a26d8f30ea3602496a <57d183764f3002f9625ee4deeeb20716c519534e
  4. Affected versionversion=7974728094d35f38775417a26d8f30ea3602496a <6353dae51bc9b3cad13c9d890b53311a46c96b4e
  5. Affected versionversion=7974728094d35f38775417a26d8f30ea3602496a <7f2ea5ed588c03d481f0301e6c3d4240132383fb
  6. Affected versionversion=7974728094d35f38775417a26d8f30ea3602496a <9fa21b0f78adb514e3bd96a505ddb752e9727ff3
  7. Affected versionversion=7974728094d35f38775417a26d8f30ea3602496a <a86987d03a4d39acdbe4533d83db4d656ea36c59
  8. Affected versionversion=7974728094d35f38775417a26d8f30ea3602496a <e47b2a350bb0ff123434ec5484c6dc3333b0727c
  9. Affected versionversion=7974728094d35f38775417a26d8f30ea3602496a <fdd95e819d828c975aaeb258a3fed5dd7fd136d0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.16; version=7974728094d35f38775417a26d8f30ea3602496a <3af2ea4035581a1607d9830779c187a0c7e225aa; version=7974728094d35f38775417a26d8f30ea3602496a <57d183764f3002f9625ee4deeeb20716c519534e; version=7974728094d35f38775417a26d8f30ea3602496a <6353dae51bc9b3cad13c9d890b53311a46c96b4e; version=7974728094d35f38775417a26d8f30ea3602496a <7f2ea5ed588c03d481f0301e6c3d4240132383fb; version=7974728094d35f38775417a26d8f30ea3602496a <9fa21b0f78adb514e3bd96a505ddb752e9727ff3; version=7974728094d35f38775417a26d8f30ea3602496a <a86987d03a4d39acdbe4533d83db4d656ea36c59; version=7974728094d35f38775417a26d8f30ea3602496a <e47b2a350bb0ff123434ec5484c6dc3333b0727c; version=7974728094d35f38775417a26d8f30ea3602496a <fdd95e819d828c975aaeb258a3fed5dd7fd136d0

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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