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CVE-2023-3106

Kernel: netlink socket crash (null pointer deref) in netlink_dump function

Published: 7/12/2023 Last updated: 11/20/2025 Reserved: 6/5/2023

A NULL pointer dereference vulnerability was found in netlink_dump. This issue can occur when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set and can cause a denial of service or possibly another unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.

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

Metrics

Version Score Severity Vector String
3.1 6.6 Medium CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Opam packages affected (27)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes orun rawlink rawlink-eio rawlink-lwt 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 (13)

Product Vendor Version
Red Hat Enterprise Linux 6 Red Hat >=1.0, <12.9.8
Red Hat Enterprise Linux 7 Red Hat all versions
Red Hat Enterprise Linux 9 Red Hat all versions
Red Hat Enterprise Linux 6 Red Hat <= 7.0.13
Red Hat Enterprise Linux 7 Red Hat < 79.0.3945.79
Red Hat Enterprise Linux 8 Red Hat 20.5.1.2
Red Hat Enterprise Linux 9 Red Hat < 92
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 7 Red Hat >=15.5, <15.5.5
Red Hat Enterprise Linux 8 Red Hat >=15.6, <15.6.1
Red Hat Enterprise Linux 7 Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat 4.0.0
Red Hat Enterprise Linux 9 Red Hat < 11.3.0

References (12)