ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat Oct 29 18:47:34 2022 +0200| [1dc8d82da910972d308aebc1ee722044f83b9ccc] | committer: Michael Niedermayer
avcodec/alsdec: Check bits left before block decoding in non multi channel coding loop Fixes: Timeout Fixes: 52161/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-6440216563154944 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1dc8d82da910972d308aebc1ee722044f83b9ccc --- libavcodec/alsdec.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index eab382e74f..4605b2248f 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -1660,7 +1660,8 @@ static int read_frame_data(ALSDecContext *ctx, unsigned int ra_frame) if (!sconf->mc_coding || ctx->js_switch) { int independent_bs = !sconf->joint_stereo; - + if (get_bits_left(gb) < 7*channels*ctx->num_blocks) + return AVERROR_INVALIDDATA; for (c = 0; c < channels; c++) { js_blocks[0] = 0; js_blocks[1] = 0; _______________________________________________ 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".
