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Add extra check before integer conversion

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end < p should never happen, but just be extra sure
This commit is contained in:
Manuel Pégourié-Gonnard 2015-10-02 09:53:52 +02:00
parent 643a922c56
commit f3e6e4badb
1 changed files with 1 additions and 1 deletions
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2
library/ssl_cli.c
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@ -133,7 +133,7 @@ static void ssl_write_renegotiation_ext( ssl_context *ssl,
SSL_DEBUG_MSG( 3, ( "client hello, adding renegotiation extension" ) );
if( (size_t)(end - p) < 5 + ssl->verify_data_len )
if( end < p || (size_t)(end - p) < 5 + ssl->verify_data_len )
{
SSL_DEBUG_MSG( 1, ( "buffer too small" ) );
return;