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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-11 21:18:58 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-02 19:55:09 +0200 |
| commit | 9aaf2c77dbd245b6796c54100e13f59dcf625a7c (patch) | |
| tree | e5d1ad3c79a5ca8aaa27234cfd2bc7594bc9e477 /libavcodec | |
| parent | 15062f646646487cb756edcb0fd76b0d67bf2b1b (diff) | |
| download | ffmpeg-9aaf2c77dbd245b6796c54100e13f59dcf625a7c.tar.gz | |
avcodec/iff: Test video_size being non zero
Fixes: Out of array access
Fixes: 20659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-5658548592967680
Fixes: 20659/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-5723561177382912
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 a035fd88ae7341a05c01f3b393921933e4ea9665)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/iff.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/iff.c b/libavcodec/iff.c index fcc5c67430..f094b4b548 100644 --- a/libavcodec/iff.c +++ b/libavcodec/iff.c @@ -440,6 +440,8 @@ static av_cold int decode_init(AVCodecContext *avctx) if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { s->video_size = FFALIGN(avctx->width, 2) * avctx->height * s->bpp; + if (!s->video_size) + return AVERROR_INVALIDDATA; s->video[0] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp); s->video[1] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp); s->pal = av_calloc(256, sizeof(*s->pal)); |