I had the same problem in Fedora 4 and after searching the web I found nothing to solve it. But... after reading the SELinux policy I finally got an easy way to allow the execution of the script mimetex.linux
From directory /var/www/html/moodle/filter/tex (or similar, this is my case), just run:
chcon -t httpd_sys_script_exec_t mimetex.linux
In this way, you allow the SELinux policy to execute that script.
Regards,
Jesús
Mathematics tools
TEX troubleshooting and SELINUX
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