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Merge branch 'PHP-8.3' into PHP-8.4

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* PHP-8.3:
  Fix GH-17047: UAF on iconv filter failure
This commit is contained in:
Niels Dossche 2024-12-06 17:44:01 +01:00
commit c192a341ec
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3 changed files with 23 additions and 8 deletions
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3
NEWS
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@ -2,6 +2,9 @@ PHP NEWS
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
?? ??? ????, PHP 8.4.3
- Iconv:
. Fixed bug GH-17047 (UAF on iconv filter failure). (nielsdos)
- Streams:
. Fixed bug GH-17037 (UAF in user filter when adding existing filter name due
to incorrect error handling). (nielsdos)

11
ext/iconv/iconv.c
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@ -2535,7 +2535,8 @@ static php_stream_filter_status_t php_iconv_stream_filter_do_filter(
if (php_iconv_stream_filter_append_bucket(self, stream, filter,
buckets_out, bucket->buf, bucket->buflen, &consumed,
php_stream_is_persistent(stream)) != SUCCESS) {
goto out_failure;
php_stream_bucket_delref(bucket);
return PSFS_ERR_FATAL;
}
php_stream_bucket_delref(bucket);
@ -2545,7 +2546,7 @@ static php_stream_filter_status_t php_iconv_stream_filter_do_filter(
if (php_iconv_stream_filter_append_bucket(self, stream, filter,
buckets_out, NULL, 0, &consumed,
php_stream_is_persistent(stream)) != SUCCESS) {
goto out_failure;
return PSFS_ERR_FATAL;
}
}
@ -2554,12 +2555,6 @@ static php_stream_filter_status_t php_iconv_stream_filter_do_filter(
}
return PSFS_PASS_ON;
out_failure:
if (bucket != NULL) {
php_stream_bucket_delref(bucket);
}
return PSFS_ERR_FATAL;
}
/* }}} */

17
ext/iconv/tests/gh17047.phpt Normal file
View file

@ -0,0 +1,17 @@
--TEST--
GH-17047 (UAF on iconv filter failure)
--EXTENSIONS--
iconv
--FILE--
<?php
$stream = fopen('php://temp', 'w+');
stream_filter_append($stream, 'convert.iconv.UTF-16BE.UTF-8');
stream_filter_append($stream, 'convert.iconv.UTF-16BE.UTF-16BE');
fputs($stream, 'test');
rewind($stream);
var_dump(stream_get_contents($stream));
fclose($stream);
?>
--EXPECTF--
Warning: stream_get_contents(): iconv stream filter ("UTF-16BE"=>"UTF-16BE"): invalid multibyte sequence in %s on line %d
string(0) ""