Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3C9D24F7CD2; Thu, 17 Sep 2026 17:37:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789666658; cv=none; b=q+eGAWfHCZq6q3+F2OXDDCTuzyC9qFk5mZez5iyprAofxAM5hyYnfNYz1Xwo69+qHIHQw+mORn5nAB3xiXyMyGo3+a2ywxze4na2atcSKTEhpPm19KrBtO7hfBQErCAXbGVk2FNDczk6NUJMvs5e5doCOJRqb29PW4wPgoGVmTU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789666658; c=relaxed/simple; bh=nIrg8e3nvFxuCi0AtN2txRNmqpbyC/X8wm6ckL2YvXw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=brip/YjsLb5oz8Kexwf+p8RggN0nbo6IQLZawEBrnqZQxHl5tA2MrbOnmabP2EgEFiuDL3FUBKTfmEOQ4dFBBUNcfVlNQiH5Fq+RCGplfVFKeE8W+0J0dOZOW1/ez/+pv18N7Lhqm9Hc8UfOG+ux5Cez/UTGObpKTGH0oUMAAqA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Tp3U6apU; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Tp3U6apU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8B0C21F000FF; Thu, 17 Sep 2026 17:37:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789666657; bh=tquOoi3E/JiPLAiwrggeRxF3irrdoBt8pBAI8Dxhew8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Tp3U6apU718l6+i+ZgwpkC6LO2YCQP4ZOmw3oQH5hVLJVWgUJO1YfyYYnCx1nxZOi kSQwH4WpN2cYqKKqziDYhTvZdTpz+JUrD2gk0qAqa/mbCQACzeMhkTQxk7cmVUfprA Fpm57KS09YXgQDbiIHzHfkRyG0DxsDfUwik1W7m8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Michael Bommarito , Hans Verkuil Subject: [PATCH 6.18 1062/1250] media: mediatek: vcodec: bound AV1 tile-start copy to the array capacity Date: Thu, 17 Sep 2026 16:14:17 +0100 Message-ID: <20260917151620.908770791@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260917151551.901433442@linuxfoundation.org> References: <20260917151551.901433442@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michael Bommarito commit 37bef2170d4c88fc3d708eecf3ef0f4032bc1372 upstream. vdec_av1_slice_setup_tile() copies tile_cols + 1 / tile_rows + 1 entries into mi_col_starts[] / mi_row_starts[] from the bitstream tile_info. Bound the copy to the array capacity. Fixes: 0934d3759615 ("media: mediatek: vcodec: separate decoder and encoder") Assisted-by: Claude:claude-opus-4-8 Cc: stable@vger.kernel.org Signed-off-by: Michael Bommarito Signed-off-by: Hans Verkuil Signed-off-by: Greg Kroah-Hartman --- drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c @@ -1299,11 +1299,12 @@ static void vdec_av1_slice_setup_tile(st tile->uniform_tile_spacing_flag = BIT_FLAG(ctrl_tile, V4L2_AV1_TILE_INFO_FLAG_UNIFORM_TILE_SPACING); - for (i = 0; i < tile->tile_cols + 1; i++) + /* Bound the copy to the mi_col_starts[]/mi_row_starts[] capacity. */ + for (i = 0; i < tile->tile_cols + 1 && i < V4L2_AV1_MAX_TILE_COLS + 1; i++) tile->mi_col_starts[i] = ALIGN(ctrl_tile->mi_col_starts[i], BIT(mib_size_log2)) >> mib_size_log2; - for (i = 0; i < tile->tile_rows + 1; i++) + for (i = 0; i < tile->tile_rows + 1 && i < V4L2_AV1_MAX_TILE_ROWS + 1; i++) tile->mi_row_starts[i] = ALIGN(ctrl_tile->mi_row_starts[i], BIT(mib_size_log2)) >> mib_size_log2; }