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Bug #68786 Missing check
Submitted: 2015-01-10 10:19 UTC Modified: 2021-10-15 17:21 UTC
From: bugreports at internot dot info Assigned:
Status: Open Package: Scripting Engine problem
PHP Version: master-Git-2015-01-10 (Git) OS: Linux Ubuntu 14.04
Private report: No CVE-ID: None
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 [2015-01-10 10:19 UTC] bugreports at internot dot info 
Description:
------------
Hi,

In Zend/zend_signal.c:

Zend/zend_signal.c:306:                 sigaction(zend_sigs[x], NULL, &sa);
Zend/zend_signal.c-307-                 if (sa.sa_sigaction != zend_signal_handler_defer) {
Zend/zend_signal.c-308-                         zend_error(E_CORE_WARNING, "zend_signal: handler was replaced for signal (%d) after startup", zend_sigs[x]);
Zend/zend_signal.c-309-                 }


The return value of "sigaction(zend_sigs[x], NULL, &sa)" is not checked, as it is everywhere else it is used.

It should be checked here, too.


Thanks,

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 [2021-10-15 17:21 UTC] cmb@php.net
-Package: *General Issues +Package: Scripting Engine problem
 [2021-10-15 17:21 UTC] cmb@php.net 
While It might be okay not to check the return value on getting[1]
(it is certainly important on setting), it might still be prudent
to do so.

[1] <https://github.com/php/php-src/blob/php-7.4.24/Zend/zend_signal.c#L348>
 
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