From cb8180aa66839fe05e3a29504fb2f67336312227 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 16 Apr 2023 23:55:56 +0200 Subject: [PATCH] avcodec/hevc_ps: Check depth to be within 8 to 16 Fixes: assertion failure in bitreader Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-627318668066816 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/hevc_ps.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/hevc_ps.c b/libavcodec/hevc_ps.c index bba0ebd1dd..266adb6e86 100644 --- a/libavcodec/hevc_ps.c +++ b/libavcodec/hevc_ps.c @@ -1557,6 +1557,10 @@ static int pps_scc_extension(GetBitContext *gb, AVCodecContext *avctx, pps->luma_bit_depth_entry = get_ue_golomb_31(gb) + 8; if (!pps->monochrome_palette_flag) pps->chroma_bit_depth_entry = get_ue_golomb_31(gb) + 8; + + if (pps->chroma_bit_depth_entry > 16 || pps->chroma_bit_depth_entry > 16) + return AVERROR_INVALIDDATA; + num_comps = pps->monochrome_palette_flag ? 1 : 3; for (int comp = 0; comp < num_comps; comp++) { int bit_depth = !comp ? pps->luma_bit_depth_entry : pps->chroma_bit_depth_entry;