certs: Fix blacklisted hexadecimal hash string check

[sfrench/cifs-2.6.git] / certs / blacklist.c

diff --git a/certs/blacklist.c b/certs/blacklist.c
index 2719fb2fbc1c9044d40730dbd0e5c7adfae187a4..a888b934a1cd53af1b48bf8bc267b06354841760 100644 (file)
--- a/certs/blacklist.c
+++ b/certs/blacklist.c
@@ -37,7 +37,7 @@ static int blacklist_vet_description(const char *desc)
 found_colon:
        desc++;
        for (; *desc; desc++) {
-               if (!isxdigit(*desc))
+               if (!isxdigit(*desc) || isupper(*desc))
                        return -EINVAL;
                n++;
        }