diff options
| author | Prabhakar Lad <prabhakar.csengg@gmail.com> | 2017-07-20 04:56:31 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-07-20 15:56:32 -0400 |
| commit | d75cf0144f150272be806b69b4e62553ba07ea1b (patch) | |
| tree | e5ca30b4c0bc4c8095aa14243042019bbff49cb5 /mm/dmapool.c | |
| parent | 6759b019eeacd7de034d4093177f7205abc16d79 (diff) | |
media: platform: davinci: drop VPFE_CMD_S_CCDC_RAW_PARAMS
drop VPFE_CMD_S_CCDC_RAW_PARAMS ioctl from dm355/dm644x following reasons:
- This ioctl was never in public api and was only defined in kernel header.
- The function set_params constantly mixes up pointers and phys_addr_t
numbers.
- This is part of a 'VPFE_CMD_S_CCDC_RAW_PARAMS' ioctl command that is
described as an 'experimental ioctl that will change in future kernels'.
- The code to allocate the table never gets called after we copy_from_user
the user input over the kernel settings, and then compare them
for inequality.
- We then go on to use an address provided by user space as both the
__user pointer for input and pass it through phys_to_virt to come up
with a kernel pointer to copy the data to. This looks like a trivially
exploitable root hole.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'mm/dmapool.c')
0 files changed, 0 insertions, 0 deletions