Bug #79945 [NEW]: using php wrappers in imagecreatefrompng causes segmentation fault

From: yiyezhiqiu233 at gmail dot com Operating system: ubuntu 20.04 PHP version: 7.4.9 Package: GD related Bug Type: Bug Bug description:using php wrappers in imagecreatefrompng causes segmentation fault Description: ------------ I try to use PHP wrappers in imagecreatefrompng, such as php://filter but in some cases it can stably cause segmentation fault Test script: --------------- <?php $a = "php://filter/read=convert.base64-encode/resource=/etc/passwd"; imagecreatefrompng($a); Expected result: ---------------- PHP Warning: imagecreatefrompng(): '/etc/passwd' is not a valid PNG file in gd.php on line 3 Actual result: -------------- [1] 945 segmentation fault php gd.php -- Edit bug report at https://bugs.php.net/bug.php?id=79945&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79945&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79945&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79945&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79945&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79945&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79945&r=support Expected behavior: https://bugs.php.net/fix.php?id=79945&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79945&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79945&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79945&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79945&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79945&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79945&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79945&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79945&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79945&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79945&r=mysqlcfg