Is there a patch available for CVE-2026-98948?

Yes, a patch is available for CVE-2026-98948. Update the affected software to the latest version immediately.

Linux CVE-2026-98948

EUVD-2026-108922

2026-10-23 Linux

GHSA-q8hc-4jgv-gvh5

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:

mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()

mlxsw_sp_flower_tmplt_create() parses a flow_cls_offload template into a stack-local struct mlxsw_sp_acl_rule_info purely to compute rulei.values.elusage. Parsing can acquire port range registers via mlxsw_sp_flower_parse_ports_range(), but since this rulei never goes through mlxsw_sp_acl_rulei_destroy(), those registers were never released, including through chain template deletion.

Factor out of mlxsw_sp_acl_rulei_destroy() the code to actually release the necessary resources and call from mlxsw_sp_flower_tmplt_create() to plug the leak.

The issue was found during a review of Wentao Liang's patch referenced below.

Affected VersionsENISA

Linux patch: 0

Linux patch: 7.2.11

Linux 6.6

Linux patch: 6.12.113

Linux fe22f7410527c2077223b5fd0fc0458db912f0db <7ea07afb230f1342ab0f9365edd0aae137f425d3

Linux fe22f7410527c2077223b5fd0fc0458db912f0db <41ad5bcf0219aaebf8ffb052c5e8177479330cde

Linux patch: 6.18.57

Linux fe22f7410527c2077223b5fd0fc0458db912f0db <4eaf1285b5c1e42f80e47f9fe0d391e70418db02

Linux fe22f7410527c2077223b5fd0fc0458db912f0db <3938430f0237c59ca08d6a366e7657b2b7f8d0bb

Linux patch: 7.3

Linux fe22f7410527c2077223b5fd0fc0458db912f0db <c8e934287debb29c6ded86b21e49fc72e186d15e

Linux patch: 6.6.160

Affected Packages

euvd linux no fix

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 - 13:17 EUVD

CVE Published

Oct 23, 2026 - 12:19 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.