patch-2.4.3 linux/arch/i386/kernel/ptrace.c

• Lines: 19
• Date: Tue Mar 6 19:44:37 2001
• Orig file: v2.4.2/linux/arch/i386/kernel/ptrace.c
• Orig date: Mon Oct 30 14:46:53 2000

diff -u --recursive --new-file v2.4.2/linux/arch/i386/kernel/ptrace.c linux/arch/i386/kernel/ptrace.c
@@ -167,14 +167,16 @@
 	if (request == PTRACE_ATTACH) {
 		if (child == current)
 			goto out_tsk;
-		if ((!child->dumpable ||
-		    (current->uid != child->euid) ||
+		if(((current->uid != child->euid) ||
 		    (current->uid != child->suid) ||
 		    (current->uid != child->uid) ||
 	 	    (current->gid != child->egid) ||
 	 	    (current->gid != child->sgid) ||
 	 	    (!cap_issubset(child->cap_permitted, current->cap_permitted)) ||
 	 	    (current->gid != child->gid)) && !capable(CAP_SYS_PTRACE))
+			goto out_tsk;
+		rmb();
+		if (!child->dumpable && !capable(CAP_SYS_PTRACE))
 			goto out_tsk;
 		/* the same process cannot be attached many times */
 		if (child->ptrace & PT_PTRACED)