Re: [PATCH nf-next] netfilter: cttimeout: fix slab-out-of-bounds read in cttimeout_net_exit

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On Tue, May 17, 2022 at 10:50:36PM +0200, Florian Westphal wrote:
> syzbot reports:
> BUG: KASAN: slab-out-of-bounds in __list_del_entry_valid+0xcc/0xf0 lib/list_debug.c:42
> [..]
>  list_del include/linux/list.h:148 [inline]
>  cttimeout_net_exit+0x211/0x540 net/netfilter/nfnetlink_cttimeout.c:617
> 
> No reproducer so far. Looking at recent changes in this area
> its clear that the free_head must not be at the end of the
> structure because nf_ct_timeout structure has variable size.

Applied, thanks



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