diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c index 9b6121a3a2d2..648b88c868bc 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c @@ -793,10 +793,30 @@ static int validate_av1_film_grain(struct v4l2_ctrl_av1_film_grain *fg) return 0; } +static int validate_av1_tile_info(struct v4l2_av1_tile_info *t) +{ + /* + * tile_cols and tile_rows index the per-tile descriptor arrays and + * bound the tile loops in the stateless AV1 drivers; the product + * bounds the total tile descriptor count. + */ + if (t->tile_cols > V4L2_AV1_MAX_TILE_COLS || + t->tile_rows > V4L2_AV1_MAX_TILE_ROWS) + return -EINVAL; + + if ((u32)t->tile_cols * t->tile_rows > V4L2_AV1_MAX_TILE_COUNT) + return -EINVAL; + + return 0; +} + static int validate_av1_frame(struct v4l2_ctrl_av1_frame *f) { int ret = 0; + ret = validate_av1_tile_info(&f->tile_info); + if (ret) + return ret; ret = validate_av1_quantization(&f->quantization); if (ret) return ret;