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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-07-22 02:57:12 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-07-26 00:14:22 +0200 |
| commit | a0edd7f583b8f63340a3c46c04d44f2ed5e0d4e7 (patch) | |
| tree | 1856f36851fc297de0ae7070e2ad340d0fbc3196 | |
| parent | 2755c73d55b2c92e73698aa03c580f311dc36d6f (diff) | |
| download | ffmpeg-a0edd7f583b8f63340a3c46c04d44f2ed5e0d4e7.tar.gz | |
avcodec/ylc: Fix shift overflow
Fixes: runtime error: shift exponent 32 is too large for 32-bit type 'unsigned int'
Fixes: 2698/clusterfuzz-testcase-minimized-4713541443518464
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 03a9e6ff303ad82e75b734edbe4917ca5fd60159)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ylc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ylc.c b/libavcodec/ylc.c index c2263e729a..346960a6cc 100644 --- a/libavcodec/ylc.c +++ b/libavcodec/ylc.c @@ -68,7 +68,7 @@ static void get_tree_codes(uint32_t *bits, int16_t *lens, uint8_t *xlat, s = nodes[node].sym; if (s != -1) { - bits[*pos] = (~pfx) & ((1U << FFMAX(pl, 1)) - 1); + bits[*pos] = (~pfx) & ((1ULL << FFMAX(pl, 1)) - 1); lens[*pos] = FFMAX(pl, 1); xlat[*pos] = s + (pl == 0); (*pos)++; |