Fixes: left shift of negative value -1 Fixes: 39223/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5498831521841152
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/h264_slice.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c index 201b22455cf..89ea16a57ff 100644 --- a/libavcodec/h264_slice.c +++ b/libavcodec/h264_slice.c @@ -1911,8 +1911,13 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl, sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1); } - if (nal->type == H264_NAL_IDR_SLICE) - sl->idr_pic_id = get_ue_golomb_long(&sl->gb); + if (nal->type == H264_NAL_IDR_SLICE) { + unsigned idr_pic_id = get_ue_golomb_long(&sl->gb); + if (idr_pic_id < 65536) { + sl->idr_pic_id = idr_pic_id; + } else + av_log(h->avctx, AV_LOG_WARNING, "idr_pic_id is invalid\n"); + } sl->poc_lsb = 0; sl->delta_poc_bottom = 0; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
