diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-02-03 22:46:55 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-04-06 20:38:05 +0200 |
| commit | 2564ac2764eaf2f7dbf3725b31cadf4f24479a8f (patch) | |
| tree | fb6aaf0f1175d4004b386d7a35f1ed45fef64a43 | |
| parent | 3a718e3bbb73f3cfb7d8eb5d00795e0c615e1226 (diff) | |
| download | ffmpeg-2564ac2764eaf2f7dbf3725b31cadf4f24479a8f.tar.gz | |
avformat/matroskadec: Fix infinite loop with bz decompression
The same check is added to zlib too, it seems not needed there though
Fixes: Infinite loop
Fixes: 43932/clusterfuzz-testcase-minimized-ffmpeg_dem_MATROSKA_fuzzer-6175167573786624
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 9c3d2cbb510674226b0c8fa6b146bf891f83786c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/matroskadec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 25e629d358..2d57789a59 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -1643,7 +1643,7 @@ static int matroska_decode_buffer(uint8_t **buf, int *buf_size, case MATROSKA_TRACK_ENCODING_COMP_ZLIB: { z_stream zstream = { 0 }; - if (inflateInit(&zstream) != Z_OK) + if (!pkt_size || inflateInit(&zstream) != Z_OK) return -1; zstream.next_in = data; zstream.avail_in = isize; @@ -1676,7 +1676,7 @@ static int matroska_decode_buffer(uint8_t **buf, int *buf_size, case MATROSKA_TRACK_ENCODING_COMP_BZLIB: { bz_stream bzstream = { 0 }; - if (BZ2_bzDecompressInit(&bzstream, 0, 0) != BZ_OK) + if (!pkt_size || BZ2_bzDecompressInit(&bzstream, 0, 0) != BZ_OK) return -1; bzstream.next_in = data; bzstream.avail_in = isize; |