RDS: Heap OOB write in rds_message_alloc_sgs()
[ Upstream commit c0955087 ] 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>
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