In the Linux kernel, the following vulnerability has been resolved:
netfilter: tproxy: bail out if IP has been disabled on the device
syzbot reports: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [..] RIP: 0010:nftproxyladdr4+0xb7/0x340 net/ipv4/netfilter/nftproxyipv4.c:62 Call Trace: nfttproxyevalv4 net/netfilter/nfttproxy.c:56 [inline] nfttproxyeval+0xa9a/0x1a00 net/netfilter/nft_tproxy.c:168
_indevgetrcu() can return NULL, so check for this.