« List of all CVEs

CVE-2023-4147

Kernel: netfilter: nf_tables_newrule when adding a rule with nfta_rule_chain_id leads to use-after-free

Published: 8/7/2023 Last updated: 2/25/2026 Reserved: 8/3/2023

A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.

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

Metrics

Version Score Severity Vector String
3.1 7.8 High CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 (7)

Product Vendor Version
Red Hat Enterprise Linux 9 Red Hat <= 5.10.*
Red Hat Enterprise Linux 9 Red Hat <= 4.19.*
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat <= 5.19.*
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat <= 6.0.*
Red Hat Enterprise Linux 9 Red Hat <= 5.4.*
Red Hat Enterprise Linux 9 Red Hat <= 5.15.*
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat <= *

References (48)