If the tile data size does not match the buffer size it did not return an AVERROR_INVALIDDATA causing futher corruption later.
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: [email protected] --- libavcodec/ivi_common.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/libavcodec/ivi_common.c b/libavcodec/ivi_common.c index f7e241b..cdd4376 100644 --- a/libavcodec/ivi_common.c +++ b/libavcodec/ivi_common.c @@ -778,8 +778,16 @@ static int decode_band(IVI45DecContext *ctx, break; result = ivi_decode_blocks(&ctx->gb, band, tile, avctx); - if (result < 0 || ((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) { - av_log(avctx, AV_LOG_ERROR, "Corrupted tile data encountered!\n"); + if (result < 0) { + av_log(avctx, AV_LOG_ERROR, + "Corrupted tile data encountered!\n"); + break; + } + + if (((get_bits_count(&ctx->gb) - pos) >> 3) != tile->data_size) { + av_log(avctx, AV_LOG_ERROR, + "Tile data_size mismatch!\n"); + result = AVERROR_INVALIDDATA; break; } -- 1.8.2.1 _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
