yuzu-emu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2024-11-29 08:44:22 +01:00
Code Issues Packages Projects Releases Wiki Activity

Fix bug in mbedtls_mpi_exp_mod

Browse Source 
Calling `mbedtls_mpi_exp_mod` with a freshly initialized exponent MPI `N`,
i.e. `N.p == NULL`, would lead to a null-pointer dereference.
This commit is contained in:
Hanno Becker 2017-09-28 11:02:24 +01:00
parent a988a2702a
commit 8d1dd1b5b9
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
library/bignum.c
View File

@ -1614,7 +1614,7 @@ int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi
mbedtls_mpi RR, T, W[ 2 << MBEDTLS_MPI_WINDOW_SIZE ], Apos;
int neg;
if( mbedtls_mpi_cmp_int( N, 0 ) < 0 || ( N->p[0] & 1 ) == 0 )
if( mbedtls_mpi_cmp_int( N, 0 ) <= 0 || ( N->p[0] & 1 ) == 0 )
return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
if( mbedtls_mpi_cmp_int( E, 0 ) < 0 )