Backported for 5.4/5.5, from 5.6, by Remi From 7edc639b9ff1c3576773d79d016abbeed1f93846 Mon Sep 17 00:00:00 2001 From: Stanislav Malyshev Date: Sun, 11 Nov 2018 10:04:01 -0800 Subject: [PATCH] Fix #77020: null pointer dereference in imap_mail If an empty $message is passed to imap_mail(), we must not set message to NULL, since _php_imap_mail() is not supposed to handle NULL pointers (opposed to pointers to NUL). --- NEWS | 1 + ext/imap/php_imap.c | 1 - ext/imap/tests/bug77020.phpt | 15 +++++++++++++++ 3 files changed, 16 insertions(+), 1 deletion(-) create mode 100644 ext/imap/tests/bug77020.phpt diff --git a/ext/imap/php_imap.c b/ext/imap/php_imap.c index a23e84c08521..b30440f000f3 100644 --- a/ext/imap/php_imap.c +++ b/ext/imap/php_imap.c @@ -4088,7 +4088,6 @@ PHP_FUNCTION(imap_mail) if (!message_len) { /* this is not really an error, so it is allowed. */ php_error_docref(NULL TSRMLS_CC, E_WARNING, "No message string in mail command"); - message = NULL; } if (_php_imap_mail(to, subject, message, headers, cc, bcc, rpath TSRMLS_CC)) { diff --git a/ext/imap/tests/bug77020.phpt b/ext/imap/tests/bug77020.phpt new file mode 100644 index 000000000000..8a65232eec6d --- /dev/null +++ b/ext/imap/tests/bug77020.phpt @@ -0,0 +1,15 @@ +--TEST-- +Bug #77020 (null pointer dereference in imap_mail) +--SKIPIF-- + +--FILE-- + +===DONE=== +--EXPECTF-- +Warning: imap_mail(): No message string in mail command in %s on line %d +%s +===DONE===