From 22a25ab3896cbb8dceebdba4d439e8b2b398ff0e Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 11 Jun 2017 01:05:26 +0200 Subject: [PATCH] avcodec/tiff: Fix leak of geotags[].val Fixes: 2176/clusterfuzz-testcase-minimized-5908197216878592 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/tiff.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 90d16b1723..4612c78ee9 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -1114,6 +1114,8 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame) if (s->geotags[i].count == 0 || s->geotags[i].offset + s->geotags[i].count > count) { av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key); + } else if (s->geotags[i].val) { + av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key); } else { char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", "); if (!ap) {