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| author | Janusz Krzysztofik <jmkrzyszt@gmail.com> | 2019-05-20 17:27:46 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-24 14:54:21 -0400 |
| commit | a4f4a763d8a01d0f461e3b8c4774ed45e9ded5f4 (patch) | |
| tree | 28856e40afcaa9fd5e535826c0df5e493d89c48b /drivers/media/v4l2-core | |
| parent | a8fa55078a7784a99a2ce389b5d7456a3be9a941 (diff) | |
| download | linux-a4f4a763d8a01d0f461e3b8c4774ed45e9ded5f4.tar.bz2 | |
media: v4l2-subdev: Verify v4l2_subdev_call() pointer arguments
Parameters passed to check helpers are now obtained by dereferencing
unverified pointer arguments. Check validity of those pointers first.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-subdev.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 81b08f66da9b..4036d30450d3 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -139,6 +139,9 @@ static inline int check_pad(struct v4l2_subdev *sd, __u32 pad) static inline int check_format(struct v4l2_subdev *sd, struct v4l2_subdev_format *format) { + if (!format) + return -EINVAL; + return check_which(format->which) ? : check_pad(sd, format->pad); } @@ -162,6 +165,9 @@ static int call_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) { + if (!code) + return -EINVAL; + return check_which(code->which) ? : check_pad(sd, code->pad) ? : sd->ops->pad->enum_mbus_code(sd, cfg, code); } @@ -170,6 +176,9 @@ static int call_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { + if (!fse) + return -EINVAL; + return check_which(fse->which) ? : check_pad(sd, fse->pad) ? : sd->ops->pad->enum_frame_size(sd, cfg, fse); } @@ -177,6 +186,9 @@ static int call_enum_frame_size(struct v4l2_subdev *sd, static inline int check_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *fi) { + if (!fi) + return -EINVAL; + return check_pad(sd, fi->pad); } @@ -198,6 +210,9 @@ static int call_enum_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_interval_enum *fie) { + if (!fie) + return -EINVAL; + return check_which(fie->which) ? : check_pad(sd, fie->pad) ? : sd->ops->pad->enum_frame_interval(sd, cfg, fie); } @@ -205,6 +220,9 @@ static int call_enum_frame_interval(struct v4l2_subdev *sd, static inline int check_selection(struct v4l2_subdev *sd, struct v4l2_subdev_selection *sel) { + if (!sel) + return -EINVAL; + return check_which(sel->which) ? : check_pad(sd, sel->pad); } @@ -227,6 +245,9 @@ static int call_set_selection(struct v4l2_subdev *sd, static inline int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) { + if (!edid) + return -EINVAL; + if (edid->blocks && edid->edid == NULL) return -EINVAL; @@ -246,6 +267,9 @@ static int call_set_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) static int call_dv_timings_cap(struct v4l2_subdev *sd, struct v4l2_dv_timings_cap *cap) { + if (!cap) + return -EINVAL; + return check_pad(sd, cap->pad) ? : sd->ops->pad->dv_timings_cap(sd, cap); } @@ -253,6 +277,9 @@ static int call_dv_timings_cap(struct v4l2_subdev *sd, static int call_enum_dv_timings(struct v4l2_subdev *sd, struct v4l2_enum_dv_timings *dvt) { + if (!dvt) + return -EINVAL; + return check_pad(sd, dvt->pad) ? : sd->ops->pad->enum_dv_timings(sd, dvt); } |