RDS: Heap OOB write in rds_message_alloc_sgs()
commit10d06ed9a1899fcc1ecb7a1573f0f95b92dc470c
authorMohamed Ghannam <simo.ghannam@gmail.com>
Tue, 2 Jan 2018 19:44:34 +0000 (2 19:44 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 Jan 2018 08:35:29 +0000 (17 09:35 +0100)
treed8fd1375f3b94c6b069ba14115375a5db04bf353
parentd19b5ed46cce475fa8cae56aba8eadf794a1f090
RDS: Heap OOB write in rds_message_alloc_sgs()

[ Upstream commit c095508770aebf1b9218e77026e48345d719b17c ]

When args->nr_local is 0, nr_pages gets also 0 due some size
calculation via rds_rm_size(), which is later used to allocate
pages for DMA, this bug produces a heap Out-Of-Bound write access
to a specific memory region.

Signed-off-by: Mohamed Ghannam <simo.ghannam@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/rds/rdma.c