fbdev: potential information leak in do_fb_ioctl()

The "fix" struct has a 2 byte hole after ->ywrapstep and the
"fix = info->fix;" assignment doesn't necessarily clear it.  It depends
on the compiler.  The solution is just to replace the assignment with an
memcpy().

Fixes: 1f5e31d7e55a ("fbmem: don't call copy_from/to_user() with mutex held")
Signed-off-by: Dan Carpenter <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: Andrea Righi <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Daniel Thompson <[email protected]>
Cc: Peter Rosin <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Gerd Hoffmann <[email protected]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

0 files changed, 0 insertions, 0 deletions