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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-04-26 03:46:33 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-05-01 02:57:12 +0200 |
| commit | 20a6bfda0f7c6447ac94611736cee6e9ce6972a0 (patch) | |
| tree | 0b3ad9d4df4dac54b7f60174ffa0a76338d35cb7 | |
| parent | c26a762ea1bf028a33554a5f7a18d8dd7d82f5a8 (diff) | |
| download | ffmpeg-20a6bfda0f7c6447ac94611736cee6e9ce6972a0.tar.gz | |
avformat/mxfdec: Check body_offset
Fixes: signed integer overflow: 538976288 - -9223372036315799520 cannot be represented in type 'long'
Fixes: 68060/clusterfuzz-testcase-minimized-ffmpeg_dem_MXF_fuzzer-5523457266745344
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Tomas Härdin <git@haerdin.se>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mxfdec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index 233d614f78..e65cec74c2 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -791,6 +791,9 @@ static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size partition->index_sid = avio_rb32(pb); partition->body_offset = avio_rb64(pb); partition->body_sid = avio_rb32(pb); + if (partition->body_offset < 0) + return AVERROR_INVALIDDATA; + if (avio_read(pb, op, sizeof(UID)) != sizeof(UID)) { av_log(mxf->fc, AV_LOG_ERROR, "Failed reading UID\n"); return AVERROR_INVALIDDATA; |