* [PATCH AUTOSEL 4.19 22/32] sctp: Fix out-of-bounds warning in sctp_process_asconf_param()
[not found] <20210505164004.3463707-1-sashal@kernel.org>
@ 2021-05-05 16:39 ` Sasha Levin
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From: Sasha Levin @ 2021-05-05 16:39 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Gustavo A. R. Silva, kernel test robot, Kees Cook,
Marcelo Ricardo Leitner, David S . Miller, Sasha Levin,
linux-sctp, netdev
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 ce6053be60bc..dc51e14f568e 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -3148,7 +3148,7 @@ 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
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