[PATCH v5 1/2] lib/mpi: Fix buffer overrun when SG is too long

Roberto Sassu roberto.sassu at huaweicloud.com
Mon Jan 16 08:57:57 UTC 2023


On Fri, 2023-01-06 at 23:18 +0800, Herbert Xu wrote:
> On Tue, Dec 27, 2022 at 03:27:39PM +0100, Roberto Sassu wrote:
> > From: Herbert Xu <herbert at gondor.apana.org.au>
> > 
> > The helper mpi_read_raw_from_sgl sets the number of entries in
> > the SG list according to nbytes.  However, if the last entry
> > in the SG list contains more data than nbytes, then it may overrun
> > the buffer because it only allocates enough memory for nbytes.
> > 
> > Fixes: 2d4d1eea540b ("lib/mpi: Add mpi sgl helpers")
> > Reported-by: Roberto Sassu <roberto.sassu at huaweicloud.com>
> > Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>
> > ---
> >  lib/mpi/mpicoder.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> Patch applied.  Thanks.

Hi Herbert

will you take also the second patch?

Thanks

Roberto



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