RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-02-23 07:16:56 +00:00
Code Issues Projects Releases Wiki Activity

avcodec/hevcdec: Check s->ref in the md5 path similar to hwaccel

Browse Source 
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 3b51e19922)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-08-14 23:39:56 +02:00
parent 8229f4327f
commit ec9af84dc5
No known key found for this signature in database
GPG Key ID: B18E8928B3948D64
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/hevcdec.c
View File

@ -3221,7 +3221,7 @@ 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) {