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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-07-23 18:48:54 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-09-08 01:32:30 +0200 |
| commit | d5cc9d8dd9eb592f9467a614ef28e6d5c5381e7c (patch) | |
| tree | 66560ad5688c3cb2cbf495f0b1bdbf04a02e445d | |
| parent | d48476183fad230c8e457b2f314f8e136b973c4e (diff) | |
| download | ffmpeg-d5cc9d8dd9eb592f9467a614ef28e6d5c5381e7c.tar.gz | |
avcodec/vmixdec: Check for end of input in decode_dcac()
Fixes: Timeout
Fixes: 59952/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VMIX_fuzzer-6718213736759296
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/vmixdec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/vmixdec.c b/libavcodec/vmixdec.c index b77c90929a..4cc5963e25 100644 --- a/libavcodec/vmixdec.c +++ b/libavcodec/vmixdec.c @@ -115,6 +115,8 @@ static int decode_dcac(AVCodecContext *avctx, if (dc_run > 0) { dc_run--; } else { + if (get_bits_left(dc_gb) < 1) + return AVERROR_INVALIDDATA; dc_v = get_se_golomb_vmix(dc_gb); dc += (unsigned)dc_v; if (!dc_v) @@ -127,6 +129,8 @@ static int decode_dcac(AVCodecContext *avctx, continue; } + if (get_bits_left(ac_gb) < 1) + return AVERROR_INVALIDDATA; ac_v = get_se_golomb_vmix(ac_gb); i = scan[n]; block[i] = ((unsigned)ac_v * factors[i]) >> 4; |