Hi, The file "/proc/sys/kernel/randomize_va_space" has write permission for user as below: [root at shagun ~]# ls -lrtZ /proc/sys/kernel/randomize_va_space rw-r--r--. root root system_u:object_r:proc_security_t:s0 /proc/sys/kernel/randomize_va_space If we want to change this permission to read only permission for the user. Is it possible? And i found the code also: 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 Can we make it as 0444, currently randomize_va_space is 644? Please suggest. Regards, Shagun -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-devel/attachments/20190626/39bdbb0c/attachment-0007.html>