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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 16:11:57 +0100 |
| commit | 09dad52390025b8ab73c4196cd616a7e4410cf32 (patch) | |
| tree | 7f485455a3f01cac066eb9d209503461b01ef050 | |
| parent | a3c66132d957db7f146601ac35f31944b0e5d98f (diff) | |
| download | ffmpeg-09dad52390025b8ab73c4196cd616a7e4410cf32.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>
| -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 a62a4c8a6f..329db66149 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -537,7 +537,7 @@ 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 { |