Fixes: out of array access Fixes: 24604/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-4843529818603520
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/tiff.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 08dbca9d60..8c0b6f0853 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -1434,7 +1434,9 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame) s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */ break; case DNG_LINEARIZATION_TABLE: - for (int i = 0; i < FFMIN(count, 1 << s->bpp); i++) + if (count > FF_ARRAY_ELEMS(s->dng_lut)) + return AVERROR_INVALIDDATA; + for (int i = 0; i < count; i++) s->dng_lut[i] = ff_tget(&s->gb, type, s->le); break; case DNG_BLACK_LEVEL: -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
