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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-04-22 21:59:29 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-14 00:21:49 +0200 |
| commit | 927ff67ab44b08fa0f57ac73faa2b438cbf740ce (patch) | |
| tree | 4809d9eecfa8876141bf798b6e5ac28642e52bc1 | |
| parent | 44eabc5d5d9ed479cad1df0acc8f172093e44364 (diff) | |
| download | ffmpeg-927ff67ab44b08fa0f57ac73faa2b438cbf740ce.tar.gz | |
avcodec/h264_cavlc: Fix undefined behavior on qscale overflow
Fixes: 1214/clusterfuzz-testcase-minimized-6130606599569408
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit fc8cff96ed45dfdb91ed03e9942845f28be0e770)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/h264_cavlc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/h264_cavlc.c b/libavcodec/h264_cavlc.c index 069b52129c..72dfaaab45 100644 --- a/libavcodec/h264_cavlc.c +++ b/libavcodec/h264_cavlc.c @@ -1112,7 +1112,7 @@ decode_intra_mb: dquant= get_se_golomb(&sl->gb); - sl->qscale += dquant; + sl->qscale += (unsigned)dquant; if (((unsigned)sl->qscale) > max_qp){ if (sl->qscale < 0) sl->qscale += max_qp + 1; |