CVE-2026-23016

kernel: Linux kernel: Denial of Service due to improper network connection tracking reference handling

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Severity

Moderate

Red Hat Product Security

6.1

CVSS 3.1

Review impact separately from score.

Published · January 31, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's network connection tracking (conntrack) subsystem. A local user could exploit this by sending specially crafted fragmented network packets. This improper management of connection tracking references can prevent the conntrack module from properly releasing resources, leading to a denial of service (DoS) condition.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 6.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

CWE-911 · Improper Update of Reference Count