diff options
| author | Vasiliy Kulikov <segoon@openwall.com> | 2011-06-24 16:08:38 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-08 10:23:19 -0700 |
| commit | fc10e555b21481e5f9ccbf9b4dc804140e556a04 (patch) | |
| tree | eab0ee487e5cb3c805c7cf17b3ea90a33c41e264 /sound | |
| parent | 2beffeba8046011cf87062b842327328fb22cda7 (diff) | |
proc: restrict access to /proc/PID/io
commit 1d1221f375c94ef961ba8574ac4f85c8870ddd51 upstream.
/proc/PID/io may be used for gathering private information. E.g. for
openssh and vsftpd daemons wchars/rchars may be used to learn the
precise password length. Restrict it to processes being able to ptrace
the target process.
ptrace_may_access() is needed to prevent keeping open file descriptor of
"io" file, executing setuid binary and gathering io information of the
setuid'ed process.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions