Fixes: out of array access Fixes: 29345/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HAP_fuzzer-5401813482340352
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/hapdec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/hapdec.c b/libavcodec/hapdec.c index ab364aa790..260fda2968 100644 --- a/libavcodec/hapdec.c +++ b/libavcodec/hapdec.c @@ -86,6 +86,8 @@ static int hap_parse_decode_instructions(HapContext *ctx, int size) return ret; for (i = 0; i < section_size / 4; i++) { ctx->chunks[i].compressed_offset = bytestream2_get_le32(gbc); + if (ctx->chunks[i].compressed_offset < 0) + return AVERROR_INVALIDDATA; } had_offsets = 1; is_first_table = 0; @@ -106,6 +108,8 @@ static int hap_parse_decode_instructions(HapContext *ctx, int size) for (i = 0; i < ctx->chunk_count; i++) { ctx->chunks[i].compressed_offset = running_size; running_size += ctx->chunks[i].compressed_size; + if (running_size > INT_MAX) + return AVERROR_INVALIDDATA; } } -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
