Bugtraq mailing list archives
Re: non-exec stacks on solaris.
From: casper () HOLLAND SUN COM (Casper Dik)
Date: Wed, 1 Jul 1998 15:17:22 +0200
not long ago, someone posted that you can disable execution of instructions on the stack via /etc/system for solaris. There appears to be three variables for this: noexec_user_stack noexec_user_stack_log noexec_zfod_argsp The first two are pretty obvious, but what about the third ?
The first two (new in 2.6) are, indeed, obvious. (Note that they exist in all kernels but only work on sun4m/sun4d and Ultras) Noexec_zfod_argsp is the variable used by the mechanism internally; it's the argument pointer used to initialize the page protection by the stack. It's not a variable you can set. (i.e., the variable contains the protection bits as used on a "noexec" zero-fill-on-demand page. Casper
Current thread:
- non-exec stacks on solaris. Darren Reed (Jul 01)
- <Possible follow-ups>
- Re: non-exec stacks on solaris. Casper Dik (Jul 01)