lkml.org 
[lkml]   [2021]   [May]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH AUTOSEL 5.4 30/46] sctp: Fix out-of-bounds warning in sctp_process_asconf_param()
Date
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>

[ Upstream commit e5272ad4aab347dde5610c0aedb786219e3ff793 ]

Fix the following out-of-bounds warning:

net/sctp/sm_make_chunk.c:3150:4: warning: 'memcpy' offset [17, 28] from the object at 'addr' is out of the bounds of referenced subobject 'v4' with type 'struct sockaddr_in' at offset 0 [-Warray-bounds]

This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().

Link: https://github.com/KSPP/linux/issues/109
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/sctp/sm_make_chunk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index d5eda966a706..4ffb9116b6f2 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -3134,7 +3134,7 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
* primary.
*/
if (af->is_any(&addr))
- memcpy(&addr.v4, sctp_source(asconf), sizeof(addr));
+ memcpy(&addr, sctp_source(asconf), sizeof(addr));

if (security_sctp_bind_connect(asoc->ep->base.sk,
SCTP_PARAM_SET_PRIMARY,
--
2.30.2
\
 
 \ /
  Last update: 2021-05-05 19:32    [W:0.106 / U:2.792 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site