From 1560224d3a26574f0195af3853e4d7e050b0b06f Mon Sep 17 00:00:00 2001 From: Stanislav Malyshev Date: Mon, 6 Jun 2022 00:56:51 -0600 Subject: [PATCH 2/3] Fix bug #81719: mysqlnd/pdo password buffer overflow (cherry picked from commit 58006537fc5f133ae8549efe5118cde418b3ace9) (cherry picked from commit 9433de72e291db518357fe55531cc15432d43ec4) --- ext/mysqlnd/mysqlnd_wireprotocol.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ext/mysqlnd/mysqlnd_wireprotocol.c b/ext/mysqlnd/mysqlnd_wireprotocol.c index 759b131b63..eb7af323a4 100644 --- a/ext/mysqlnd/mysqlnd_wireprotocol.c +++ b/ext/mysqlnd/mysqlnd_wireprotocol.c @@ -794,7 +794,8 @@ php_mysqlnd_change_auth_response_write(void * _packet) MYSQLND_VIO * vio = packet->header.vio; MYSQLND_STATS * stats = packet->header.stats; MYSQLND_CONNECTION_STATE * connection_state = packet->header.connection_state; - zend_uchar * buffer = pfc->cmd_buffer.length >= packet->auth_data_len? pfc->cmd_buffer.buffer : mnd_emalloc(packet->auth_data_len); + size_t total_packet_size = packet->auth_data_len + MYSQLND_HEADER_SIZE; + zend_uchar * const buffer = pfc->cmd_buffer.length >= total_packet_size? pfc->cmd_buffer.buffer : mnd_emalloc(total_packet_size); zend_uchar * p = buffer + MYSQLND_HEADER_SIZE; /* start after the header */ DBG_ENTER("php_mysqlnd_change_auth_response_write"); -- 2.35.3