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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The file "/proc/sys/kernel/randomize_va_space" has write permission for user as below:
<o:p></o:p></p>
<p class="MsoNormal">[root@shagun ~]# ls -lrtZ /proc/sys/kernel/randomize_va_space
<o:p></o:p></p>
<p class="MsoNormal">rw-r--r--. root root system_u:object_r:proc_security_t:s0 /proc/sys/kernel/randomize_va_space
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If we want to change this permission to read only permission for the user. Is it possible?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And i found the code also:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">kernel/sysctl.c @@ -1130,7 +1130,11 @@ static struct ctl_table kern_table[] = { .procname = "randomize_va_space", .data = &randomize_va_space, .maxlen = sizeof(int), +#ifdef CONFIG_ASLR_SYSCTL_READ_ONLY + .mode = 0444, +#else .mode = 0644,
+#endif <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can we make it as 0444, currently randomize_va_space is 644?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please suggest.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Shagun<o:p></o:p></p>
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