Fixes a segfault in the fuzzed sample resolutionchange.flv_s314809.
---
already ok-ed by Kostya on irc, will commit tomorrow if nobody objects
libavcodec/flashsv.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavcodec/flashsv.c b/libavcodec/flashsv.c
index ac57f9f..d12e234 100644
--- a/libavcodec/flashsv.c
+++ b/libavcodec/flashsv.c
@@ -401,6 +401,11 @@ static int flashsv_decode_frame(AVCodecContext *avctx,
void *data,
av_log_missing_feature(avctx, "zlibprime_curr", 1);
return AVERROR_PATCHWELCOME;
}
+ if (!s->blocks && (s->zlibprime_curr || s->zlibprime_prev)) {
+ av_log(avctx, AV_LOG_ERROR, "no data available for zlib "
+ "priming\n");
+ return AVERROR_INVALIDDATA;
+ }
size--; // account for flags byte
}
--
1.7.12.4
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