Dan Carpenter 18a169810c netfilter: nf_tables: fix pointer math issue in nft_byteorder_eval()
[ Upstream commit c301f0981fdd3fd1ffac6836b423c4d7a8e0eb63 ]

The problem is in nft_byteorder_eval() where we are iterating through a
loop and writing to dst[0], dst[1], dst[2] and so on...  On each
iteration we are writing 8 bytes.  But dst[] is an array of u32 so each
element only has space for 4 bytes.  That means that every iteration
overwrites part of the previous element.

I spotted this bug while reviewing commit caf3ef7468f7 ("netfilter:
nf_tables: prevent OOB access in nft_byteorder_eval") which is a related
issue.  I think that the reason we have not detected this bug in testing
is that most of time we only write one element.

Fixes: ce1e7989d989 ("netfilter: nft_byteorder: provide 64bit le/be conversion")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:07:05 +00:00
..
2021-07-01 13:19:48 -07:00
2022-06-22 12:59:43 +01:00
2022-08-23 10:43:11 +02:00
2022-07-28 22:06:15 -07:00
2022-08-09 22:14:02 -07:00
2022-09-30 18:17:17 -07:00
2021-12-16 07:18:35 -08:00
2023-11-20 11:52:15 +01:00
2021-10-15 11:33:08 +01:00
2023-09-19 12:28:03 +02:00
2021-10-13 09:40:46 -07:00
2021-07-27 13:05:56 +01:00
2022-05-11 12:43:10 +01:00
2023-10-10 22:00:46 +02:00
2023-04-13 16:55:23 +02:00
2022-06-19 10:00:02 +01:00
2023-06-14 11:15:20 +02:00
2021-08-03 13:05:26 +01:00
2023-08-11 12:08:17 +02:00