From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/3] avcodec/evc_ps: Check chroma_format_idc
Date: Fri, 13 Oct 2023 01:27:57 +0200
Message-ID: <20231012232759.5352-1-michael@niedermayer.cc> (raw)
Fixes: out of array access
Fixes: 62678/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4858264984354816
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/evc_ps.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/evc_ps.c b/libavcodec/evc_ps.c
index c11b92d1c5..19895d404d 100644
--- a/libavcodec/evc_ps.c
+++ b/libavcodec/evc_ps.c
@@ -179,6 +179,10 @@ int ff_evc_parse_sps(GetBitContext *gb, EVCParamSets *ps)
// 2 - 4:2:2
// 3 - 4:4:4
sps->chroma_format_idc = get_ue_golomb_31(gb);
+ if (sps->chroma_format_idc > 3) {
+ ret = AVERROR_INVALIDDATA;
+ goto fail;
+ }
sps->pic_width_in_luma_samples = get_ue_golomb_long(gb);
sps->pic_height_in_luma_samples = get_ue_golomb_long(gb);
--
2.17.1
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next reply other threads:[~2023-10-12 23:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-12 23:27 Michael Niedermayer [this message]
2023-10-12 23:27 ` [FFmpeg-devel] [PATCH 2/3] avcodec/evc_parse: remove pow() and log2() Michael Niedermayer
2023-10-12 23:27 ` [FFmpeg-devel] [PATCH 3/3] avcodec/evc_parse: Check tid Michael Niedermayer
2023-10-27 11:02 ` Dawid Kozinski/Multimedia (PLT) /SRPOL/Staff Engineer/Samsung Electronics
2023-10-27 12:58 ` Dawid Kozinski/Multimedia (PLT) /SRPOL/Staff Engineer/Samsung Electronics
2023-10-27 13:02 ` Dawid Kozinski/Multimedia (PLT) /SRPOL/Staff Engineer/Samsung Electronics
2023-10-31 22:00 ` Michael Niedermayer
2023-10-13 0:18 ` [FFmpeg-devel] [PATCH 1/3] avcodec/evc_ps: Check chroma_format_idc Kieran Kunhya
2023-10-15 22:56 ` Michael Niedermayer
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