yuzu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2025-02-02 21:41:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Avoid wraparound on in_left

Browse source 
Avoid wraparound on in_left
This commit is contained in:
mohammad1603 2018-03-19 07:18:13 -07:00
parent 6085c721d2
commit b11af86daf
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
library/ssl_tls.c
View file

@ -2434,6 +2434,14 @@ int mbedtls_ssl_fetch_input( mbedtls_ssl_context *ssl, size_t nb_want )
if( ret < 0 ) if( ret < 0 )
return( ret ); return( ret );
// At this point ret value is positive, verify that adding ret
// value to ssl->in_left doesn't cause a wraparound
if (ssl->in_left + (size_t)ret < ssl->in_left)
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "wraparound happened over in_left value" ) );
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
}
ssl->in_left += ret; ssl->in_left += ret;
} }
} }