RDMA/irdma: Prevent zero-length STAG registration
Currently irdma allows zero-length STAGs to be programmed in HW during the kernel mode fast register flow. Zero-length MR or STAG registration disable HW memory length checks. Improve gaps in bounds checking in irdma by preventing zero-length STAG or MR registrations except if the IB_PD_UNSAFE_GLOBAL_RKEY is set. This addresses the disclosure CVE-2023-25775. Fixes: b48c24c2 ("RDMA/irdma: Implement device supported verb APIs") Signed-off-by:Christopher Bednarz <christopher.n.bednarz@intel.com> Signed-off-by:
Shiraz Saleem <shiraz.saleem@intel.com> Link: https://lore.kernel.org/r/20230818144838.1758-1-shiraz.saleem@intel.com Signed-off-by:
Leon Romanovsky <leon@kernel.org>
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