[PATCH] fix Linux kernel ELF core dump privilege elevation

As reported by Paul Starzetz <ihaquer@isec.pl>

Reference: CAN-2005-1263
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

fs/binfmt_elf.c

@@ -251,7 +251,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr * exec,
 	}
 
 	/* Populate argv and envp */
-	p = current->mm->arg_start;
+	p = current->mm->arg_end = current->mm->arg_start;
 	while (argc-- > 0) {
 		size_t len;
 		__put_user((elf_addr_t)p, argv++);
@@ -1301,7 +1301,7 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
 static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
 		       struct mm_struct *mm)
 {
-	int i, len;
+	unsigned int i, len;
 	
 	/* first copy the parameters from user space */
 	memset(psinfo, 0, sizeof(struct elf_prpsinfo));