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reset global pointers to prevent use-after-free in zend_jit_status() #19212

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reset global pointers to prevent use-after-free in zend_jit_status() #19212

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a4f1c89
reset global pointers to prevent use-after-free
realFlowControl Jul 22, 2025
c939b91
clarify comment
realFlowControl Jul 22, 2025
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8 changes: 8 additions & 0 deletions ext/opcache/jit/zend_jit.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5087,6 +5087,14 @@ ZEND_EXT_API void zend_jit_shutdown(void)
#else
zend_jit_trace_free_caches(&jit_globals);
#endif

/* Reset global pointers to prevent use-after-free in `zend_jit_status()`
* after gracefully restarting Apache with mod_php, see:
* https://github.com/php/php-src/pull/19212 */
dasm_ptr = NULL;
dasm_buf = NULL;
dasm_end = NULL;
dasm_size = 0;
}

static void zend_jit_reset_counters(void)
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