Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 59d399d3 authored by Thomas Renninger's avatar Thomas Renninger Committed by Len Brown
Browse files

[ACPI] Fix Null pointer deref in video/lcd/brightness 

http://bugzilla.kernel.org/show_bug.cgi?id=5571



Signed-off-by: default avatarThomas Renninger <trenn@suse.de>
Signed-off-by: default avatarNishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: default avatarYu Luming <luming.yu@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent d2149b54

drivers/acpi/video.c

+1 −1
Original line number Diff line number Diff line
@@ -812,7 +812,7 @@ acpi_video_device_write_brightness(struct file *file, 


	ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness");



	if (!dev || count + 1 > sizeof str)

	if (!dev || !dev->brightness || count + 1 > sizeof str)

		return_VALUE(-EINVAL);



	if (copy_from_user(str, buffer, count))