ffmpeg | branch: release/4.3 | Michael Niedermayer <mich...@niedermayer.cc> | Mon Aug 19 20:37:56 2024 +0200| [4c9978124d987d1d1f77dc5975110189b5ed4cae] | committer: Michael Niedermayer
avcodec/notchlc: Check bytes left before reading Fixes: Use of uninitialized value Fixes: 71230/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_NOTCHLC_fuzzer-4624502095413248 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 b9c7f50c7de9b7d8c533eae173c9b77a6719346c) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4c9978124d987d1d1f77dc5975110189b5ed4cae --- libavcodec/notchlc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/notchlc.c b/libavcodec/notchlc.c index 05db9e4943..558de58fe1 100644 --- a/libavcodec/notchlc.c +++ b/libavcodec/notchlc.c @@ -92,6 +92,9 @@ static int lz4_decompress(AVCodecContext *avctx, } while (current == 255); } + if (bytestream2_get_bytes_left(gb) < num_literals) + return AVERROR_INVALIDDATA; + if (pos + num_literals < HISTORY_SIZE) { bytestream2_get_buffer(gb, history + pos, num_literals); pos += num_literals; _______________________________________________ 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".
