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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-14 13:01:46 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-17 15:56:59 +0100 |
| commit | dd8351b1184b8054925c28ecc5fcb6dbbc177fad (patch) | |
| tree | 28cd94a8a4945198c5fd02b1153f8249a348d3ed | |
| parent | ab6f571ef71967da7c7c1cfba483d3597c7357d5 (diff) | |
| download | ffmpeg-dd8351b1184b8054925c28ecc5fcb6dbbc177fad.tar.gz | |
avcodec/exr: Check remaining bits in last get code loop
Fixes: runtime error: shift exponent -7 is negative
Fixes: 3902/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-6081926122176512
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/exr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/exr.c b/libavcodec/exr.c index f08576af22..47f59bd638 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -558,7 +558,7 @@ static int huf_decode(const uint64_t *hcode, const HufDec *hdecod, while (lc > 0) { const HufDec pl = hdecod[(c << (HUF_DECBITS - lc)) & HUF_DECMASK]; - if (pl.len) { + if (pl.len && lc >= pl.len) { lc -= pl.len; get_code(pl.lit, rlc, c, lc, gb, out, oe, outb); } else { |