Patch "netfilter: x_tables: assert minimum target size" has been added to the 4.4-stable tree
From: <gregkh@linuxfoundation.org>
Date: 2016-06-22 21:19:00
This is a note to let you know that I've just added the patch titled
netfilter: x_tables: assert minimum target size
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-x_tables-assert-minimum-target-size.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 [off-list ref] know about it.
From a08e4e190b866579896c09af59b3bdca821da2cd Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de> Date: Fri, 1 Apr 2016 14:17:25 +0200 Subject: netfilter: x_tables: assert minimum target size From: Florian Westphal <fw@strlen.de> commit a08e4e190b866579896c09af59b3bdca821da2cd upstream. The target size includes the size of the xt_entry_target struct. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/netfilter/x_tables.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c@@ -567,6 +567,9 @@ int xt_check_entry_offsets(const void *b return -EINVAL; t = (void *)(e + target_offset); + if (t->u.target_size < sizeof(*t)) + return -EINVAL; + if (target_offset + t->u.target_size > next_offset) return -EINVAL;
Patches currently in stable-queue which might be from fw@strlen.de are queue-4.4/netfilter-x_tables-add-and-use-xt_check_entry_offsets.patch queue-4.4/netfilter-x_tables-assert-minimum-target-size.patch queue-4.4/netfilter-x_tables-add-compat-version-of-xt_check_entry_offsets.patch queue-4.4/netfilter-x_tables-check-for-bogus-target-offset.patch queue-4.4/netfilter-x_tables-validate-e-target_offset-early.patch queue-4.4/netfilter-x_tables-validate-targets-of-jumps.patch queue-4.4/netfilter-x_tables-don-t-move-to-non-existent-next-rule.patch queue-4.4/netfilter-x_tables-kill-check_entry-helper.patch queue-4.4/netfilter-x_tables-make-sure-e-next_offset-covers-remaining-blob-size.patch queue-4.4/netfilter-x_tables-check-standard-target-size-too.patch queue-4.4/netfilter-x_tables-validate-all-offsets-and-sizes-in-a-rule.patch queue-4.4/netfilter-x_tables-fix-unconditional-helper.patch