24 lines
1.2 KiB
Diff
24 lines
1.2 KiB
Diff
From 58006537fc5f133ae8549efe5118cde418b3ace9 Mon Sep 17 00:00:00 2001
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From: Stanislav Malyshev <smalyshev@gmail.com>
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Date: Mon, 6 Jun 2022 00:56:51 -0600
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Subject: [PATCH] Fix bug #81719: mysqlnd/pdo password buffer overflow
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---
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ext/mysqlnd/mysqlnd_wireprotocol.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/ext/mysqlnd/mysqlnd_wireprotocol.c b/ext/mysqlnd/mysqlnd_wireprotocol.c
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index 87b2e7c31331..e4a298adaea4 100644
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--- a/ext/mysqlnd/mysqlnd_wireprotocol.c
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+++ b/ext/mysqlnd/mysqlnd_wireprotocol.c
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@@ -771,7 +771,8 @@ php_mysqlnd_change_auth_response_write(MYSQLND_CONN_DATA * conn, void * _packet)
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MYSQLND_VIO * vio = conn->vio;
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MYSQLND_STATS * stats = conn->stats;
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MYSQLND_CONNECTION_STATE * connection_state = &conn->state;
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- zend_uchar * const buffer = pfc->cmd_buffer.length >= packet->auth_data_len? pfc->cmd_buffer.buffer : mnd_emalloc(packet->auth_data_len);
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+ size_t total_packet_size = packet->auth_data_len + MYSQLND_HEADER_SIZE;
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+ zend_uchar * const buffer = pfc->cmd_buffer.length >= total_packet_size? pfc->cmd_buffer.buffer : mnd_emalloc(total_packet_size);
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zend_uchar * p = buffer + MYSQLND_HEADER_SIZE; /* start after the header */
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DBG_ENTER("php_mysqlnd_change_auth_response_write");
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