ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Tue Aug 6 18:18:15 2024 +0200| [6996e1238e80b23caf05428dcbdd065fbd70ff10] | committer: Michael Niedermayer
avformat/av1dec: Check bits left before get_leb128() Fixes: use of uninitialized value Fixes: 70872/clusterfuzz-testcase-minimized-ffmpeg_dem_OBU_fuzzer-6005782487826432 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6996e1238e80b23caf05428dcbdd065fbd70ff10 --- libavformat/av1dec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/av1dec.c b/libavformat/av1dec.c index 3363003b18..a5b620a0ab 100644 --- a/libavformat/av1dec.c +++ b/libavformat/av1dec.c @@ -326,6 +326,9 @@ static int read_obu_with_size(const uint8_t *buf, int buf_size, int64_t *obu_siz skip_bits(&gb, 3); // extension_header_reserved_3bits } + if (get_bits_left(&gb) < 8) + return AVERROR_INVALIDDATA; + *obu_size = get_leb128(&gb); if (*obu_size > INT_MAX) 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".
