Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:
On Mon, 7 Jul 2025 12:45:17 +0000 you wrote:
> syzbot found a potential access to uninit-value in nf_flow_pppoe_proto()
>
> Blamed commit forgot the Ethernet header.
>
> BUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27
> nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27
> nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]
> nf_hook_slow+0xe1/0x3d0 net/netfilter/core.c:623
> nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline]
> nf_ingress net/core/dev.c:5742 [inline]
> __netif_receive_skb_core+0x4aff/0x70c0 net/core/dev.c:5837
> __netif_receive_skb_one_core net/core/dev.c:5975 [inline]
> __netif_receive_skb+0xcc/0xac0 net/core/dev.c:6090
> netif_receive_skb_internal net/core/dev.c:6176 [inline]
> netif_receive_skb+0x57/0x630 net/core/dev.c:6235
> tun_rx_batched+0x1df/0x980 drivers/net/tun.c:1485
> tun_get_user+0x4ee0/0x6b40 drivers/net/tun.c:1938
> tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1984
> new_sync_write fs/read_write.c:593 [inline]
> vfs_write+0xb4b/0x1580 fs/read_write.c:686
> ksys_write fs/read_write.c:738 [inline]
> __do_sys_write fs/read_write.c:749 [inline]
>
> [...]
Here is the summary with links:
- [net] netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto()
https://git.kernel.org/netdev/net/c/18cdb3d982da
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
