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Commit 2fadaef4 authored by Al Viro's avatar Al Viro
Browse files

auxv: require the target to be tracable (or yourself) 



same as for environ, except that we didn't do any checks to
prevent access after suid execve

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent d6f64b89

fs/proc/base.c

+3 −3
Original line number Original line Diff line number Diff line
@@ -281,9 +281,9 @@ static int proc_pid_cmdline(struct task_struct *task, char * buffer) 




static int proc_pid_auxv(struct task_struct *task, char *buffer)

static int proc_pid_auxv(struct task_struct *task, char *buffer)

{

{

	int res = 0;

	struct mm_struct *mm = mm_for_maps(task);

	struct mm_struct *mm = get_task_mm(task);

	int res = PTR_ERR(mm);

	if (mm) {

	if (mm && !IS_ERR(mm)) {

		unsigned int nwords = 0;

		unsigned int nwords = 0;

		do {

		do {

			nwords += 2;

			nwords += 2;