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CVE-2023-7192

Kernel: refcount leak in ctnetlink_create_conntrack()

Published: 1/2/2024 Last updated: 11/20/2025 Reserved: 12/30/2023

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.

CNA assigner: redhat (53f830b8-0a3f-465b-8143-3b8a9948e749) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 5.5 Medium CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (22)

Product Vendor Version
Red Hat Enterprise Linux 6 Red Hat <= 6.17.*
Red Hat Enterprise Linux 7 Red Hat < 6.10
Red Hat Enterprise Linux 8.2 Telecommunications Update Service Red Hat <= 6.6.*
Red Hat Enterprise Linux 8 Red Hat <= 5.10.*
Red Hat Enterprise Linux 8.4 Telecommunications Update Service Red Hat 6.10
Red Hat Enterprise Linux 9 Red Hat 3.8
Red Hat Enterprise Linux 8.2 Advanced Update Support Red Hat < 2.6.12
Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Red Hat <= 6.12.*
Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat <= 5.4.*
Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat 3.14
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat <= 5.4.*
Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Red Hat 2.6.12
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat <= *
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat < 2.6.12
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Red Hat < 2.6.12
Red Hat Enterprise Linux 9 Red Hat < 4.12
Red Hat Enterprise Linux 8.2 Telecommunications Update Service Red Hat < 4002ee98c022d671ecc1e4a84029e9ae7d8a5603
Red Hat Enterprise Linux 8.4 Telecommunications Update Service Red Hat <= 6.17.*
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat <= 5.10.*
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat 4.12
Red Hat Enterprise Linux 7 Red Hat <= 5.10.*
Red Hat Enterprise Linux 8 Red Hat <= 5.4.*

References (52)