IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields
commit d39bf40e upstream. Overflowing either addrlimit or bytes_togo can allow userspace to trigger a buffer overflow of kernel memory. Check for overflows in all the places doing math on user controlled buffers. Fixes: f931551b ("IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters") Link: https://lore.kernel.org/r/20211012175519.7298.77738.stgit@awfm-01.cornelisnetworks.com Reported-by:Ilja Van Sprundel <ivansprundel@ioactive.com> Reviewed-by:
Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> Signed-off-by:
Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com> Signed-off-by:
Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> Signed-off-by:
Jason Gunthorpe <jgg@nvidia.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
6525bfbd
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