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Patch "netfilter: x_tables: assert minimum target size" has been added to the 3.14-stable tree

PATCH [email protected] 1 participant 1 message Jun 22, 2016

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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 3.14-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-3.14 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 a08e4e190b866579896c09af59b3bdca821da2cd Mon Sep 17 00:00:00 2001

From: Florian Westphal <[email protected]>
Date: Fri, 1 Apr 2016 14:17:25 +0200
Subject: netfilter: x_tables: assert minimum target size

From: Florian Westphal <[email protected]>

commit a08e4e190b866579896c09af59b3bdca821da2cd upstream.

The target size includes the size of the xt_entry_target struct.

---
 net/netfilter/x_tables.c |    3 +++
 1 file changed, 3 insertions(+)
net/netfilter/x_tables.c +3 -0
@@ -587,6 +587,9 @@ 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 [email protected] are

queue-3.14/netfilter-x_tables-add-and-use-xt_check_entry_offsets.patch queue-3.14/netfilter-x_tables-assert-minimum-target-size.patch queue-3.14/netfilter-x_tables-add-compat-version-of-xt_check_entry_offsets.patch queue-3.14/netfilter-x_tables-check-for-bogus-target-offset.patch queue-3.14/netfilter-x_tables-validate-e-target_offset-early.patch queue-3.14/netfilter-x_tables-validate-targets-of-jumps.patch queue-3.14/netfilter-x_tables-don-t-move-to-non-existent-next-rule.patch queue-3.14/netfilter-x_tables-kill-check_entry-helper.patch queue-3.14/netfilter-x_tables-make-sure-e-next_offset-covers-remaining-blob-size.patch queue-3.14/netfilter-x_tables-check-standard-target-size-too.patch queue-3.14/netfilter-x_tables-validate-all-offsets-and-sizes-in-a-rule.patch queue-3.14/netfilter-x_tables-don-t-reject-valid-target-size-on-some-architectures.patch queue-3.14/netfilter-x_tables-fix-unconditional-helper.patch