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sctp: Fix out-of-bounds warning in sctp_process_asconf_param()

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[ 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>
This commit is contained in:
Gustavo A. R. Silva 2021-04-16 14:12:36 -05:00 committed by Greg Kroah-Hartman
parent 136b0261f1
commit d5716625f1
1 changed files with 1 additions and 1 deletions
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2
net/sctp/sm_make_chunk.c
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@ -3126,7 +3126,7 @@ 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,