Is there a patch available for CVE-2026-98937?

Yes, a patch is available for CVE-2026-98937. Update the affected software to the latest version immediately.

Linux CVE-2026-98937

EUVD-2026-108909

2026-10-23 Linux

GHSA-5cg4-h7ff-5xr5

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:

perf/core: Check kernel access when kernel callchains are requested

perf_event_open() currently gates perf_allow_kernel() only on !attr.exclude_kernel.

However, users can still request kernel callchain collection with attr.exclude_callchain_kernel 0 even when attr.exclude_kernel 1. That still requires kernel profiling privilege, but the existing check does not enforce it.

Update the permission check to call perf_allow_kernel() when either kernel sampling is requested or kernel callchains are requested.

This keeps permission checks aligned with requested data and prevents unprivileged use of kernel callchain capture.

Affected VersionsENISA

Linux patch: 7.3

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2581b43e162cfc43e6f5d8dd8d2b38f3441550de

Linux patch: 6.18.56

Linux 0 <6.18.56

Linux 0 <6.12.113

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6e187281f978a2bff98ead6aa40f8ddc9a2c9afb

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f

Linux patch: 7.2.10

Linux 0 <7.2.10

Linux patch: 6.12.113

Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <132bee76097be421ab3012130b5b506324cf2be1

Affected Packages

euvd linux fix: 6.12.113, 6.18.56, 7.2.10

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 - 12:11 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.