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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-14 13:01:46 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-18 01:16:03 +0200 |
| commit | fe435d11fb595b997f297986efce3f32ca56ed0c (patch) | |
| tree | d98a4d61783f831eaae61f158a51303a70b9d9ac /libavcodec | |
| parent | 3c001b18cea759fa8b727aae33c31f9d55d59999 (diff) | |
| download | ffmpeg-fe435d11fb595b997f297986efce3f32ca56ed0c.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>
(cherry picked from commit dd8351b1184b8054925c28ecc5fcb6dbbc177fad)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -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 { |