From: Jiri Slaby <jslaby@suse.cz>
Date: Tue, 7 Aug 2012 19:47:39 +0000 (+0200)
Subject: TTY: ttyprintk, don't touch behind tty->write_buf
X-Git-Tag: v3.2.32~142
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=49167eecdec7620e15678f7a0ac30c4e8e4b32db;p=pandora-kernel.git

TTY: ttyprintk, don't touch behind tty->write_buf

commit ee8b593affdf893012e57f4c54a21984d1b0d92e upstream.

If a user provides a buffer larger than a tty->write_buf chunk and
passes '\r' at the end of the buffer, we touch an out-of-bound memory.

Add a check there to prevent this.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Samo Pogacnik <samo_pogacnik@t-2.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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