Is there a patch available for CVE-2026-98887?

Yes, a patch is available for CVE-2026-98887. Update the affected software to the latest version immediately.

Linux CVE-2026-98887

EUVD-2026-108681

2026-10-23 Linux

GHSA-vjmv-qr7m-gc5q

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:

wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO

hwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload to a struct hwsim_tx_rate * and unconditionally reads IEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds the attribute from above (NLA_BINARY .len is a maximum) and the op sets GENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is accepted and the loop reads past the payload.

Require the exact length in the policy, so a malformed attribute is rejected before the handler runs.

Affected VersionsENISA

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695

Linux patch: 7.2

Linux 0 <5.15.222

Linux 0 <5.10.271

Linux patch: 6.1.189

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7

Linux patch: 5.15.222

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3dc723ac78a6e4fa0fd49e27e487ed319da40a9f

Linux 0 <6.12.111

Linux patch: 5.10.271

Linux 0 <6.1.189

Linux 0 <6.6.158

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3a96bb65b4b820d8b41fa155781ec1c29e3479d4

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1ae85bb34fe3510659b86d6a5f8036dd498233f8

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <59e1f2a0242232b4a3af144ae317d3913fc09046

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b5b1234bbfa25537fb9a5c0d62c328ed4547f721

Linux patch: 6.18.53

Linux 0 <6.18.53

Linux patch: 6.6.158

Linux patch: 6.12.111

Affected Packages

euvd linux fix: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53

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 23, 2026 - 12:16 EUVD

CVE Published

Oct 23, 2026 - 11:37 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.