From e90f0ac334f2bec0961955dceb824148594a4016 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 21 Oct 2018 00:35:12 +0200 Subject: [PATCH] avcodec/ilbcdec: Check startindex Fixes: Out of array read Fixes: 10789/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ILBC_fuzzer-5153255445757952 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol Signed-off-by: Michael Niedermayer --- libavcodec/ilbcdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/ilbcdec.c b/libavcodec/ilbcdec.c index 8f234b98e1..8a6dbe0b75 100644 --- a/libavcodec/ilbcdec.c +++ b/libavcodec/ilbcdec.c @@ -1372,7 +1372,7 @@ static int ilbc_decode_frame(AVCodecContext *avctx, void *data, if (unpack_frame(s)) mode = 0; - if (s->frame.start < 1) + if (s->frame.start < 1 || s->frame.start > 5) mode = 0; if (mode) {