ffmpeg | branch: release/6.1 | Michael Niedermayer <mich...@niedermayer.cc> | Wed Jul 23 13:16:33 2025 +0200| [4e196c9128c2fff1a2f6051ef17336f7c8c3df63] | committer: Michael Niedermayer
avformat/mov: make sure file_checksum is fully initialized Fixes: use of uninitialized memory Fixes: 394990189/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6431722199908352 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 8b16e1ddd9c0bc4ca90447d481186216cfdce0fe) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4e196c9128c2fff1a2f6051ef17336f7c8c3df63 --- libavformat/mov.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/mov.c b/libavformat/mov.c index ed562810ef..7a7545c9b5 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -1107,7 +1107,9 @@ static int mov_read_adrm(MOVContext *c, AVIOContext *pb, MOVAtom atom) avio_read(pb, output, 8); // go to offset 8, absolute position 0x251 avio_read(pb, input, DRM_BLOB_SIZE); avio_read(pb, output, 4); // go to offset 4, absolute position 0x28d - avio_read(pb, file_checksum, 20); + ret = ffio_read_size(pb, file_checksum, 20); + if (ret < 0) + goto fail; // required by external tools ff_data_to_hex(checksum_string, file_checksum, sizeof(file_checksum), 1); _______________________________________________ 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".
