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

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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: stable@vger.kernel.org (everything maintained past v2.6.37)
Cc: Samo Pogacnik <samo_pogacnik@t-2.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jiri Slaby 2012-08-07 21:47:39 +02:00 • committed by Greg Kroah-Hartman

parent f06fb543c1

commit ee8b593aff

1 changed files with 1 additions and 1 deletions

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drivers/char/ttyprintk.c

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