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CVE-2022-50001

netfilter: nft_tproxy: restrict to prerouting hook

EPSS 0.2%
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.
Affected products
Linux · Linux

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References
https://git.kernel.org/stable/c/0b21edf4cc13516716848e0a4fdf726aa2a62cd9https://git.kernel.org/stable/c/18bbc3213383a82b05383827f4b1b882e3f0a5a5https://git.kernel.org/stable/c/343fed6b0daeb528ae5c9d4d84d9ff763ac95619https://git.kernel.org/stable/c/83ef55c4281f1b4c6bd4457c2e96ccd1c9e80200https://git.kernel.org/stable/c/9a1d92cbeac3335fee99fa865b8c5b0f2e71a8f7https://git.kernel.org/stable/c/eaba3f9b672c3a3f820da8ee9584b9520674eafa