Bugtraq: Re: Linux kernel ELF core dump privilege elevation

[Paul Starzetz <ihaquer () isec pl>]

On Wed, 11 May 2005, Greg KH wrote:

that seems ok.

> --- gregkh-2.6.orig/fs/binfmt_elf.c   2005-05-11 00:03:45.000000000 -0700
> +++ gregkh-2.6/fs/binfmt_elf.c        2005-05-11 00:09:17.000000000 -0700
> @@ -251,7 +251,7 @@
>       }
>  
>       /* 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 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));
-- 
Paul Starzetz
iSEC Security Research
http://isec.pl/