CVE-2022-50001

netfilter: nft_tproxy: restrict to prerouting hook

Published: 6/18/2025 Last updated: 6/18/2025 Reserved: 6/18/2025

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_tproxy: restrict to prerouting hook TPROXY is only allowed from prerouting, but nft_tproxy doesn't check this. This fixes a crash (null dereference) when using tproxy from e.g. output.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

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 (2)

Product	Vendor	Version
Linux	Linux	< 414fb08628143203d29ccd0264b5a83fb9523c03
Linux	Linux	before version 31.0.101.4314

References (6)

https://git.kernel.org/stable/c/0b21edf4cc13516716848e0a4fdf726aa2a62cd9
https://git.kernel.org/stable/c/83ef55c4281f1b4c6bd4457c2e96ccd1c9e80200
https://git.kernel.org/stable/c/eaba3f9b672c3a3f820da8ee9584b9520674eafa
https://git.kernel.org/stable/c/9a1d92cbeac3335fee99fa865b8c5b0f2e71a8f7
https://git.kernel.org/stable/c/343fed6b0daeb528ae5c9d4d84d9ff763ac95619
https://git.kernel.org/stable/c/18bbc3213383a82b05383827f4b1b882e3f0a5a5