On Sat, Jul 02, 2022 at 07:59:11PM +0200, Hugues ANGUELKOV wrote: > From d91007a18140e02a1f12c9627058a019fe55b8e6 Mon Sep 17 00:00:00 2001 > From: Arthur Mongodin <amongodin@xxxxxxxxxxxxx> > Date: Sat, 2 Jul 2022 17:11:48 +0200 > Subject: [PATCH v1] netfilter: nf_tables: fix nft_set_elem_init heap buffer > overflow > > The length used for the memcpy in nft_set_elem_init may exceed the bound > of the allocated object due to a weak check in nft_setelem_parse_data. > As a user can add an element with a data type NFT_DATA_VERDICT to a set > with a data type different of NFT_DATA_VERDICT, then the comparison on the > data type of the element allows to avoid the comparaison on the data length > This fix forces the length comparison in nft_setelem_parse_data by removing > the check for NFT_DATA_VERDICT type. https://patchwork.ozlabs.org/project/netfilter-devel/patch/20220702021631.796822-1-pablo@xxxxxxxxxxxxx/
