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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-22 21:17:52 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:11:55 +0200 |
| commit | c9ee2ce31b11e20ddcefd3ff5d9e3ad28aa1bc9b (patch) | |
| tree | 51d7b1eaf77ec7f4340c9de8ea9546cf93f430a2 | |
| parent | 7d640c8d3064988f7895b2786c4267dfb0d54edf (diff) | |
| download | ffmpeg-c9ee2ce31b11e20ddcefd3ff5d9e3ad28aa1bc9b.tar.gz | |
avcodec/iff: finetune the palette size check in the mask case
Fixes: out of array access
Fixes: 15381/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-5668057826983936
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0f9789c8e37eb6d166729e876729beb21b7d5647)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/iff.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/iff.c b/libavcodec/iff.c index 852d7abd87..2e483efbd2 100644 --- a/libavcodec/iff.c +++ b/libavcodec/iff.c @@ -1444,7 +1444,7 @@ static int decode_frame(AVCodecContext *avctx, buf_size -= bytestream2_tell(gb); desc = av_pix_fmt_desc_get(avctx->pix_fmt); - if (!s->init && avctx->bits_per_coded_sample <= 8 && + if (!s->init && avctx->bits_per_coded_sample <= 8 - (s->masking == MASK_HAS_MASK) && avctx->pix_fmt == AV_PIX_FMT_PAL8) { if ((res = cmap_read_palette(avctx, (uint32_t *)frame->data[1])) < 0) return res; |