[PATCH v2 1/4] sscanf return values are checked to ensure correct parsing.

[Dehan Meng]

Signed-off-by: Dehan Meng <dem...@redhat.com>
---
 qga/commands-linux.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/qga/commands-linux.c b/qga/commands-linux.c
index 51d5e3d927..2c2b5f4ff2 100644
--- a/qga/commands-linux.c
+++ b/qga/commands-linux.c
@@ -2103,7 +2103,9 @@ static char *hexToIPAddress(const void *hexValue, int 
is_ipv6)
         int i;
 
         for (i = 0; i < 16; i++) {
-            sscanf(&hexStr[i * 2], "%02hhx", &in6.s6_addr[i]);
+            if (sscanf(&hex_str[i * 2], "%02hhx", &in6.s6_addr[i]) != 1) {
+                return NULL;
+            }
         }
         inet_ntop(AF_INET6, &in6, addr, INET6_ADDRSTRLEN);
 
-- 
2.40.1