CVE-2023-7192 - CVE House
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Status published Medium CVE-2023-7192

Kernel: refcount leak in ctnetlink_create_conntrack()

Vulnerability Description

A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Virtualization 4 for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Vulnerable Versions:
0:4.18.0-193.133.1.el8_2, 0:4.18.0-193.133.1.rt13.184.el8_2, 0:4.18.0-305.125.1.el8_4, 0:4.18.0-305.125.1.rt7.201.el8_4, 0:4.18.0-372.95.1.el8_6, 0:4.18.0-477.51.1.el8_8, 0:5.14.0-70.93.2.el9_0, 0:5.14.0-70.93.1.rt21.165.el9_0, 0:5.14.0-284.52.1.el9_2, 0:5.14.0-284.52.1.rt14.337.el9_2

Timeline

Official Publish: January 2nd, 2024
Last Modified: November 20th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)