diff options
| -rw-r--r-- | src/shared/util.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/shared/util.c b/src/shared/util.c index e7ff0f8840..1709bb70ca 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -280,6 +280,14 @@ int parse_uid(const char *s, uid_t* ret_uid) { if ((unsigned long) uid != ul) return -ERANGE; + /* Some libc APIs use (uid_t) -1 as special placeholder */ + if (uid == (uid_t) 0xFFFFFFFF) + return -EINVAL; + + /* A long time ago UIDs where 16bit, hence explicitly avoid the 32bit -1 too */ + if (uid == (uid_t) 0xFFFF) + return -EINVAL; + *ret_uid = uid; return 0; } |