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Subject[PATCH][next][resend] lib/mpi: fix off-by-one check on index "no"
Date
From: Colin Ian King <colin.king@canonical.com>

There is an off-by-one range check on the upper limit of
index "no". Fix this by changing the > comparison to >=

Addresses-Coverity: ("Out-of-bounds read")
Fixes: a8ea8bdd9df9 ("lib/mpi: Extend the MPI library")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---

resend to Cc linux-crypto

---
lib/mpi/mpiutil.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/mpi/mpiutil.c b/lib/mpi/mpiutil.c
index 3c63710c20c6..632d0a4bf93f 100644
--- a/lib/mpi/mpiutil.c
+++ b/lib/mpi/mpiutil.c
@@ -69,7 +69,7 @@ postcore_initcall(mpi_init);
*/
MPI mpi_const(enum gcry_mpi_constants no)
{
- if ((int)no < 0 || no > MPI_NUMBER_OF_CONSTANTS)
+ if ((int)no < 0 || no >= MPI_NUMBER_OF_CONSTANTS)
pr_err("MPI: invalid mpi_const selector %d\n", no);
if (!constants[no])
pr_err("MPI: MPI subsystem not initialized\n");
--
2.27.0
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