Commit 5342fba5 authored Feb 26, 2006 by Suresh Siddha Committed by Linus Torvalds Feb 26, 2006

[PATCH] x86_64: Check for bad elf entry address.



Fixes a local DOS on Intel systems that lead to an endless
recursive fault.  AMD machines don't seem to be affected.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent f83f2b5f

fs/binfmt_elf.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -938,6 +938,11 @@ static int load_elf_binary(struct linux_binprm * bprm, struct pt_regs * regs)
		kfree(elf_interpreter);
		} else {
		elf_entry = loc->elf_ex.e_entry;
		if (BAD_ADDR(elf_entry)) {
		send_sig(SIGSEGV, current, 0);
		retval = -ENOEXEC; /* Nobody gets to see this, but.. */
		goto out_free_dentry;
		}
		}

		kfree(elf_phdata);