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Ensure memcpy is not called with NULL and 0 args in x509 module

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This commit is contained in:
Andres Amaya Garcia 2017-12-06 09:39:23 +00:00
parent f1ee63562a
commit cb5123fa86
1 changed files with 3 additions and 1 deletions
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4
library/x509_crl.c
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@ -294,7 +294,9 @@ int mbedtls_x509_crl_parse_der( mbedtls_x509_crl *chain,
/*
* Copy raw DER-encoded CRL
*/
if( buflen != 0 && ( ( p = mbedtls_calloc( 1, buflen ) ) == NULL ) )
if( buflen == 0 )
return( MBEDTLS_ERR_X509_INVALID_FORMAT );
else if( ( p = mbedtls_calloc( 1, buflen ) ) == NULL )
return( MBEDTLS_ERR_X509_ALLOC_FAILED );
memcpy( p, buf, buflen );