svn commit: r314850 - head/sys/kern

[Konstantin Belousov]

Author: kib
Date: Tue Mar  7 13:37:35 2017
New Revision: 314850
URL: https://svnweb.freebsd.org/changeset/base/314850

Log:
  Require whole brand string matching for old Elf branding.
  
  Sponsored by:	The FreeBSD Foundation
  MFC after:	1 week

Modified:
  head/sys/kern/imgact_elf.c

Modified: head/sys/kern/imgact_elf.c
==============================================================================
--- head/sys/kern/imgact_elf.c	Tue Mar  7 13:36:43 2017	(r314849)
+++ head/sys/kern/imgact_elf.c	Tue Mar  7 13:37:35 2017	(r314850)
@@ -309,8 +309,8 @@ __elfN(get_brandinfo)(struct image_param
 			continue;
 		if (hdr->e_machine == bi->machine &&
 		    (hdr->e_ident[EI_OSABI] == bi->brand ||
-		    strncmp((const char *)&hdr->e_ident[OLD_EI_BRAND],
-		    bi->compat_3_brand, strlen(bi->compat_3_brand)) == 0)) {
+		    strcmp((const char *)&hdr->e_ident[OLD_EI_BRAND],
+		    bi->compat_3_brand) == 0)) {
 			/* Looks good, but give brand a chance to veto */
 			if (!bi->header_supported || bi->header_supported(imgp))
 				return (bi);