Fix GH-11347: Memory leak when calling a static method inside an xpath query #11350
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…path query It's a type confusion bug. `zend_make_callable` may change the function name of the fci to become an array, causing a crash in debug mode on `zval_ptr_dtor_str(&fci.function_name);` in `dom_xpath_ext_function_php`. On a production build it doesn't crash but only causes a leak, because the array elements are not destroyed, only the array container itself is. We can use the nogc variant because it cannot contain cycles, the potential array can only contain 2 strings.
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Thanks for fixing the issue. Will this patch be in the next release 8.1.19 ? |
8.1.19 is already released. The next release is 8.1.20, but that one's already tagged. |
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It's a type confusion bug.
zend_make_callablemay change the function name of the fci to become an array, causing a crash in debug mode onzval_ptr_dtor_str(&fci.function_name);indom_xpath_ext_function_php. On a production build it doesn't crash but only causes a leak, because the array elements are not destroyed, only the array container itself is.