Is there a patch available for EUVD-2026-103879?

Yes, a patch is available for EUVD-2026-103879. Update the affected software to the latest version immediately.

Linux EUVD-2026-103879

| CVE-2026-98794

2026-10-18 Linux

GHSA-c8w6-8f9f-2m9q

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:

ipvs: filter some flags received in the backup server

While the IPVS SYNC protocol is not secure by design we can still protect the backup server from messages that can wreak havoc.

This commit addresses problems from received connection flags or their combinations. We now drop messages as follows:

the NO_CPORT+TEMPLATE combination allows lookups for normal

connections to hit template which can break in many ways. While the master does not sync connections with NO_CPORT flag, i.e. before they are established, we still accept NO_CPORT without TEMPLATE.

ONE_PACKET: it is not sent by master, so we do not

expect it in backup. Before now it was ignored by IP_VS_CONN_F_BACKUP_MASK for protocol v1 while protocol v0 created connections that are not hashed and dropped immediately. Better to apply the IP_VS_CONN_F_BACKUP_MASK also to the flags from v0 messages for consistency with v1.

Affected VersionsENISA

Linux 87375ab47cd0ba04124c6d3fd80db5c368f5dcb6 <f96e91748f6304668fe647e686d199d7207d36f1

Linux patch: 0

Linux patch: 7.2.10

Linux patch: 7.3-rc6

Linux patch: 6.12.113

Linux 2.6.14

Linux 87375ab47cd0ba04124c6d3fd80db5c368f5dcb6 <f4cd1db7d421e82945713a36084bb0c35b75b27e

Linux 87375ab47cd0ba04124c6d3fd80db5c368f5dcb6 <45a93111835ccfea7d969ec73588e33745fd9834

Linux 87375ab47cd0ba04124c6d3fd80db5c368f5dcb6 <55d033324f67a15ff56be6d38d6e87f644e0ed62

Linux patch: 6.18.56

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 18, 2026 - 17:19 EUVD

CVE Published

Oct 18, 2026 - 15:48 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 91% 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.