media: v4l: ioctl: Fix memory leak in video_usercopy
When an IOCTL with argument size larger than 128 that also used array arguments were handled, two memory allocations were made but alas, only the latter one of them was released. This happened because there was only a single local variable to hold such a temporary allocation. Fix this by adding separate variables to hold the pointers to the temporary allocations. Reported-by:Arnd Bergmann <arnd@kernel.org> Reported-by:
<syzbot+1115e79c8df6472c612b@syzkaller.appspotmail.com> Fixes: d14e6d76 ("[media] v4l: Add multi-planar ioctl handling code") Cc: stable@vger.kernel.org Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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