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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-06-30 00:52:20 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-07-12 21:55:22 +0200 |
| commit | 75f3d1b82261f31c6bbcee8046cec6792194355a (patch) | |
| tree | 0e29aa09d014da7d65a6a033b4d4dc74c553c172 | |
| parent | 675e18e0fb9fc7a7e568a37ee8335798306e7063 (diff) | |
| download | ffmpeg-75f3d1b82261f31c6bbcee8046cec6792194355a.tar.gz | |
avcodec/tiff: Check pixel format types for dng
Fixes: out of array access
Fixes: 48271/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-6149705769287680
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/tiff.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index e4a5d3c537..bf69b083b3 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -761,6 +761,7 @@ static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int strid if (s->is_bayer) { av_assert0(width == (s->bpp * s->width + 7) >> 3); } + av_assert0(!(s->is_bayer && is_yuv)); if (p->format == AV_PIX_FMT_GRAY12) { av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width); if (s->yuv_line == NULL) { @@ -844,6 +845,8 @@ static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int strid av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n"); return AVERROR_PATCHWELCOME; } + if (!s->is_bayer) + return AVERROR_PATCHWELCOME; if ((ret = dng_decode_jpeg(s->avctx, p, s->stripsize, 0, 0, s->width, s->height)) < 0) return ret; return 0; |