tty: wipe buffer if not echoing data

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commit b97b3d9fb5 upstream.

If we are not echoing the data to userspace or the console is in icanon
mode, then perhaps it is a "secret" so we should wipe it once we are
done with it.

This mirrors the logic that the audit code has.

Reported-by: aszlig <aszlig@nix.build>
Tested-by: Milan Broz <gmazyland@gmail.com>
Tested-by: Daniel Zatovic <daniel.zatovic@gmail.com>
Tested-by: aszlig <aszlig@nix.build>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Greg Kroah-Hartman 2018-10-04 11:06:14 -07:00 • committed by Greg Kroah-Hartman

parent 5a2261ed3a

commit 9365cdf8db

1 changed files with 17 additions and 3 deletions

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drivers/tty/n_tty.c

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