From c26c8bb23a51cf6392b3a825ca48b8bd4c87b582 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 2 Feb 2017 15:23:31 +0100 Subject: [PATCH] avcodec/dca_lbr: Fix off by 1 error in freq check Fixes out of array read Fixes: 510/clusterfuzz-testcase-5737865715646464 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 61f70416f8542cc86c84ae6e0342ba10a35d7cba) Signed-off-by: Michael Niedermayer --- libavcodec/dca_lbr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/dca_lbr.c b/libavcodec/dca_lbr.c index 342603c7d4..56c5f40982 100644 --- a/libavcodec/dca_lbr.c +++ b/libavcodec/dca_lbr.c @@ -310,7 +310,7 @@ static int parse_tonal(DCALbrDecoder *s, int group) break; // End of subframe freq += diff - 2; - if (freq >> (5 - group) > s->nsubbands * 4 - 5) { + if (freq >> (5 - group) > s->nsubbands * 4 - 6) { av_log(s->avctx, AV_LOG_ERROR, "Invalid spectral line offset\n"); return -1; }