HID: picolcd_core: validate output report details
authorKees Cook <keescook@chromium.org>
Wed, 28 Aug 2013 20:31:52 +0000 (22:31 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 27 Sep 2013 00:18:16 +0000 (17:18 -0700)
commit0697d8057661db5032a55dd5b0d115262c883cb4
treee70ce3ef7fc3df7f143c8a43ed6fb84951cbc5d8
parent56085cec9ef90f5133effbcf71149d19ea2f5170
HID: picolcd_core: validate output report details

commit 1e87a2456b0227ca4ab881e19a11bb99d164e792 upstream.

A HID device could send a malicious output report that would cause the
picolcd HID driver to trigger a NULL dereference during attr file writing.

[jkosina@suse.cz: changed

report->maxfield < 1

to

report->maxfield != 1

as suggested by Bruno].

CVE-2013-2899

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Bruno Prémont <bonbons@linux-vserver.org>
Acked-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/hid/hid-picolcd_core.c