Is there a patch available for CVE-2026-98483?

Yes, a patch is available for CVE-2026-98483. Update the affected software to the latest version immediately.

Linux CVE-2026-98483

EUVD-2026-103723

2026-10-18 Linux

GHSA-qhvx-2qrr-cpv7

Information Disclosure Linux

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Monitor Track and reassess. Why: No CVSS yet + weak signal (CWE or non-zero EPSS).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisCVE.org

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

nfc: fix use-after-free in nfc_get_local_general_bytes

Commit 6709d4b7bc2e ("net: nfc: Fix use-after-free caused by nfc_llcp_find_local") attempted to fix a use-after-free (UAF) issue by invoking nfc_llcp_local_put(local) after accessing local->gb. However, if the reference count drops to zero, local is freed immediately, leading to a use-after-free when callers access the returned pointer. Alternative approaches using dynamic allocation (e.g. kmemdup) introduced memory leaks because callers consistently treat the returned pointer as borrowed memory.

Fix this properly by refactoring nfc_llcp_general_bytes() and nfc_get_local_general_bytes() to accept a caller-provided output buffer (out_gb) and its maximum length (gb_max_len). The general bytes are safely copied into out_gb before calling nfc_llcp_local_put(local), ensuring safe lifetime management without ownership transfer complications.

Update all callers across drivers (microread, pn533, pn544, st21nfca, digital_dep, and nci) to provide their own destination buffers and pass them to nfc_get_local_general_bytes().

Affected VersionsENISA

Linux patch: 6.18.55

Linux b3ad46e155a6d91b36c6e892019a43e3ef3c696d

Linux 425d9d3a92df7d96b3cfb7ee5c240293a21cbde3 <c40f61a6a413f3eaf028e5fe367fd9749e503ab0

Linux patch: 0

Linux fc8429f8d86801f092fbfbd257c3af821ac0dcd3 <2b31d0cc95856c856ada91f943fb14dfdf29a923

Linux 6709d4b7bc2e079241fdef15d1160581c5261c10 <841af260ff477f6191872bc3b2e15488615c1827

Linux 5.10.188 <5.10.271

Linux dd6ff3f3862709ab1a12566e73b9d6a9b8f6e548

Linux 6709d4b7bc2e079241fdef15d1160581c5261c10 <9ede11e12f965ace97c4e0f606667f24fb41e7e1

Linux 6.4.4 <6.5

Linux 96f2c6f272ec04083d828de46285a7d7b17d1aad <25bfa673adc70189c0bc872940421ae59f789cf6

Linux e5207c1d69b1a9707615ab6ff9376e59fc096815

Linux 6.3.13 <6.4

Linux 5.15.121 <5.15.222

Linux 6709d4b7bc2e079241fdef15d1160581c5261c10 <19bcfc2a56d0b82919079b5424c5a9a0ac897dcf

Linux 6.1.39 <6.1.189

Linux 6709d4b7bc2e079241fdef15d1160581c5261c10 <dcab71a7011918f6fdba7adcec02d217dcb84b8d

Linux patch: 5.15.222

Linux 6.5

Linux patch: 6.1.189

Linux 5.4.251 <5.5

Linux patch: 5.10.271

Linux patch: 6.6.158

Linux 6709d4b7bc2e079241fdef15d1160581c5261c10 <d8c929e9afdbc33b1876ecb97a517e850449b5bd

Linux patch: 7.2.9

Linux patch: 7.3-rc5

Linux patch: 6.12.112

Affected Packages

euvd linux fix: 5.5, 5.10.271, 5.15.222, 6.1.189, 6.4, 6.5

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Exploit and PoC references, threat intelligence from 22 sources

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Lifecycle Timeline

Patch available

Oct 18, 2026 - 16:02 EUVD

CVE Published

Oct 18, 2026 - 15:15 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 89% exploitable

Data Quality

3 sources

Confidence: Low

EUVD

CVE.org

EPSS MSRC

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity Not scored yet

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

No CVSS yet + weak signal (CWE or non-zero EPSS)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.