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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-08-14 23:39:56 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-01 00:41:28 +0200 |
| commit | d246af82c28bdb66064ca7d9c1d22baf2e8467c4 (patch) | |
| tree | ed6cc29dbfa4201e6f977687e427ff25f3088f66 | |
| parent | a90844d4435edb630945bbe3e7d5bffdf9adef81 (diff) | |
| download | ffmpeg-d246af82c28bdb66064ca7d9c1d22baf2e8467c4.tar.gz | |
avcodec/hevcdec: Check s->ref in the md5 path similar to hwaccel
This is somewhat redundant with the is_decoded check. Maybe
there is a nicer solution
Fixes: Null pointer dereference
Fixes: 49584/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5297367351427072
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 3b51e1992289383aa9f083c88e153e34b6412c89)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/hevcdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c index 8d7a4f7147..82f0cc88fe 100644 --- a/libavcodec/hevcdec.c +++ b/libavcodec/hevcdec.c @@ -3499,7 +3499,7 @@ static int hevc_decode_frame(AVCodecContext *avctx, void *data, int *got_output, } } else { /* verify the SEI checksum */ - if (avctx->err_recognition & AV_EF_CRCCHECK && s->is_decoded && + if (avctx->err_recognition & AV_EF_CRCCHECK && s->ref && s->is_decoded && s->sei.picture_hash.is_md5) { ret = verify_md5(s, s->ref->frame); if (ret < 0 && avctx->err_recognition & AV_EF_EXPLODE) { |