Patch "netfilter: arp_tables: fix invoking 32bit "iptable -P INPUT ACCEPT" failed in 64bit kernel" has been added to the 4.4-stable tree
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This is a note to let you know that I've just added the patch titled
netfilter: arp_tables: fix invoking 32bit "iptable -P INPUT ACCEPT" failed in 64bit kernel
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
netfilter-arp_tables-fix-invoking-32bit-iptable-p-input-accept-failed-in-64bit-kernel.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
17a49cd549d9dc8707dc9262210166455c612ddeMon Sep 17 00:00:00 2001
From: Hongxu Jia <[email protected]>
Date: Tue, 29 Nov 2016 21:56:26 -0500
Subject: netfilter: arp_tables: fix invoking 32bit "iptable -P INPUT ACCEPT" failed in 64bit kernel
From: Hongxu Jia <[email protected]>
commit 17a49cd549d9dc8707dc9262210166455c612dde upstream.
Since 09d9686047db ("netfilter: x_tables: do compat validation via translate_table"), it used compatr structure to assign newinfo structure. In translate_compat_table of ip_tables.c and ip6_tables.c, it used compatr->hook_entry to replace info->hook_entry and compatr->underflow to replace info->underflow, but not do the same replacement in arp_tables.c.
It caused invoking 32-bit "arptbale -P INPUT ACCEPT" failed in 64bit kernel.
--------------------------------------
root@qemux86-64:~# arptables -P INPUT ACCEPT root@qemux86-64:~# arptables -P INPUT ACCEPT ERROR: Policy for `INPUT' offset 448 != underflow 0 arptables: Incompatible with this kernel --------------------------------------
--- net/ipv4/netfilter/arp_tables.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
net/ipv4/netfilter/arp_tables.c +2 -2
@@ -1339,8 +1339,8 @@ static int translate_compat_table(struct newinfo->number = compatr->num_entries;for (i =0 ; i <NF_ARP_NUMHOOKS ; i++) { - newinfo->hook_entry[i] = info->hook_entry[i]; - newinfo->underflow[i] = info->underflow[i]; + newinfo->hook_entry[i] = compatr->hook_entry[i]; + newinfo->underflow[i] = compatr->underflow[i]; } entry1 = newinfo->entries; pos = entry1;
Patches currently in stable-queue which might be from [email protected] are
queue-4.4/netfilter-arp_tables-fix-invoking-32bit-iptable-p-input-accept-failed-in-64bit-kernel.patch