From 4bd974e42641f689b13f00db7d4682bcc2b6a1f6 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 12 Jan 2023 23:42:59 +0100 Subject: [PATCH] avcodec/motionpixels: Mask pixels to valid values Fixes: out of array access Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOTIONPIXELS_fuzzer-6724203352555520 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit ac6eec1fc258efce219e4fccb84312a1b13a7a23) Signed-off-by: Michael Niedermayer --- libavcodec/motionpixels.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/motionpixels.c b/libavcodec/motionpixels.c index 6cb444a703..5a7ad7a630 100644 --- a/libavcodec/motionpixels.c +++ b/libavcodec/motionpixels.c @@ -185,7 +185,7 @@ static YuvPixel mp_get_yuv_from_rgb(MotionPixelsContext *mp, int x, int y) int color; color = *(uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2]; - return mp_rgb_yuv_table[color]; + return mp_rgb_yuv_table[color & 0x7FFF]; } static void mp_set_rgb_from_yuv(MotionPixelsContext *mp, int x, int y, const YuvPixel *p)