diff options
| author | Miloslav Trmac <mitr@redhat.com> | 2008-10-13 11:35:15 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 18:51:39 +0200 |
| commit | 7459b6ff36ab5e7d160980c3cb2be2f8cd194778 (patch) | |
| tree | 0cac8e47e2f4242aed9dcb124007b5f6e9c8cf8c /drivers/char | |
| parent | ip2: avoid add_timer with pending timer (diff) | |
| download | linux-7459b6ff36ab5e7d160980c3cb2be2f8cd194778.tar.xz linux-7459b6ff36ab5e7d160980c3cb2be2f8cd194778.zip | |
audit: Handle embedded NUL in TTY input auditing
Data read from a TTY can contain an embedded NUL byte (e.g. after
pressing Ctrl-2, or sent to a PTY). After the previous patch, the data
would be logged only up to the first NUL.
This patch modifies the AUDIT_TTY record to always use the hexadecimal
format, which does not terminate at the first NUL byte. The vast
majority of recorded TTY input data will contain either ' ' or '\n', so
the hexadecimal format would have been used anyway.
Signed-off-by: Miloslav Trmac <mitr@redhat.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tty_audit.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/tty_audit.c b/drivers/char/tty_audit.c index 3582f43345a8..5787249934c8 100644 --- a/drivers/char/tty_audit.c +++ b/drivers/char/tty_audit.c @@ -93,7 +93,7 @@ static void tty_audit_buf_push(struct task_struct *tsk, uid_t loginuid, get_task_comm(name, tsk); audit_log_untrustedstring(ab, name); audit_log_format(ab, " data="); - audit_log_n_untrustedstring(ab, buf->data, buf->valid); + audit_log_n_hex(ab, buf->data, buf->valid); audit_log_end(ab); } buf->valid = 0; |