Merge pull request #2006 from keszybz/mymachines-overflow

nss-mymachines: do not allow overlong machine names
2015-11-23 20:51:57 +01:00
parent 3a7f4776cc cb31827d62
commit 8f00f8d6d7
1 changed files with 6 additions and 0 deletions
@@ -416,6 +416,9 @@ enum nss_status _nss_mymachines_getpwnam_r(
        if (!e || e == p)
                goto not_found;

+        if (e - p > HOST_NAME_MAX - 1) /* -1 for the last dash */
+                goto not_found;
+
        r = parse_uid(e + 1, &uid);
        if (r < 0)
                goto not_found;
@@ -573,6 +576,9 @@ enum nss_status _nss_mymachines_getgrnam_r(
        if (!e || e == p)
                goto not_found;

+        if (e - p > HOST_NAME_MAX - 1)  /* -1 for the last dash */
+                goto not_found;
+
        r = parse_gid(e + 1, &gid);
        if (r < 0)
                goto not_found;