ffmpeg | branch: release/5.1 | Michael Niedermayer <mich...@niedermayer.cc> | Fri Apr 26 03:46:33 2024 +0200| [a17885a73d373a1d15fdcbd55a6b1e9cf0f40209] | committer: Michael Niedermayer
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 <g...@haerdin.se> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 20a6bfda0f7c6447ac94611736cee6e9ce6972a0) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a17885a73d373a1d15fdcbd55a6b1e9cf0f40209 --- libavformat/mxfdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index 5c7acb5d00..c31f88bee9 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -778,6 +778,9 @@ 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; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
