Apply CVE-2016-3177 Use-after-free in gifcolor

Remove unnecessary duplicate EGifClose(). (Fixes SF bug #83)

Multiple use-after-free and double-free vulnerabilities in gifcolor.c
in GIFLIB 5.1.2 have unspecified impact and attack vectors.
https://nvd.nist.gov/vuln/detail/CVE-2016-3177

Change-Id: I24e077f2a3fbd6554d2557c4bdd94e06e3e08661
Signed-off-by: Jiyong Min <jiyong.min@samsung.com>

diff --git a/util/gifcolor.c b/util/gifcolor.c
index 1700b07..b3e586b 100644 (file)
--- a/util/gifcolor.c
+++ b/util/gifcolor.c
@@ -123,9 +123,6 @@ int main(int argc, char **argv)
     if (EGifCloseFile(GifFile, &ErrorCode) == GIF_ERROR)
     {
        PrintGifError(ErrorCode);
-       if (GifFile != NULL) {
-           EGifCloseFile(GifFile, NULL);
-       }
        exit(EXIT_FAILURE);
     }