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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-11 23:17:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-31 14:37:07 +0100 |
| commit | 6de039823c2ffcf88e8bfff0d4e3ed9d5601a122 (patch) | |
| tree | 31a444b789a53ae1827eb5473a56533445dbadaf /libavcodec/cscd.c | |
| parent | 869fe41d1088c4badcd98ee1ca2490451a07b173 (diff) | |
| download | ffmpeg-6de039823c2ffcf88e8bfff0d4e3ed9d5601a122.tar.gz | |
avcodec/cscd: Check output len in zlib as in lzo
Fixes: Timeout (>10sec -> 134ms)
Fixes: 27245/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CSCD_fuzzer-575318210772992
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/cscd.c')
| -rw-r--r-- | libavcodec/cscd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/cscd.c b/libavcodec/cscd.c index d50ddd6258..f5c93e9912 100644 --- a/libavcodec/cscd.c +++ b/libavcodec/cscd.c @@ -93,7 +93,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, case 1: { // zlib compression #if CONFIG_ZLIB unsigned long dlen = c->decomp_size; - if (uncompress(c->decomp_buf, &dlen, &buf[2], buf_size - 2) != Z_OK) { + if (uncompress(c->decomp_buf, &dlen, &buf[2], buf_size - 2) != Z_OK || dlen != c->decomp_size) { av_log(avctx, AV_LOG_ERROR, "error during zlib decompression\n"); return AVERROR_INVALIDDATA; } |