From: Andrea Dalla Costa <andrea@dallacosta.me>
Date: Sat, 11 Jan 2020 21:41:31 +0000 (+0100)
Subject: firmware-utils: fix possible memory leak and resource leak
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=0ae0f48cec08e4698e678f5e145533209491e855;p=openwrt%2Fstaging%2F981213.git

firmware-utils: fix possible memory leak and resource leak

Add missing calls to `free` for variable `buffer`.
This could lead to a memory leak.

Add missing call to `close` for file pointer `fdin`.
This could lead to a resource leak.

Signed-off-by: Andrea Dalla Costa <andrea@dallacosta.me>
---

diff --git a/tools/firmware-utils/src/dns313-header.c b/tools/firmware-utils/src/dns313-header.c
index e69e57e7ba..3c72b09bfb 100644
--- a/tools/firmware-utils/src/dns313-header.c
+++ b/tools/firmware-utils/src/dns313-header.c
@@ -168,11 +168,14 @@ int main(int argc, char **argv)
 	fdin = open(pathin, O_RDONLY);
 	if (!fdin) {
 		printf("ERROR: could not open input file\n");
+		free(buffer);
 		return 0;
 	}
 	bytes = read(fdin, buffer + HEADER_SIZE, filesize);
 	if (bytes < filesize) {
 		printf("ERROR: could not read entire file\n");
+		free(buffer);
+		close(fdin);
 		return 0;
 	}
 	close(fdin);