diff options
| author | Lennart Poettering <lennart@poettering.net> | 2015-11-29 14:27:28 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-11-30 19:42:35 +0100 |
| commit | 1dfbf0007af3023c2e3ae8282a0d0f229f3a89e3 (patch) | |
| tree | c50e23e955b9d7151fb0f4f55c833daf8e7eff01 /src/shared/dns-domain.c | |
| parent | 3b37fa735224e58fcc23c737b764d13e22c2885b (diff) | |
dns-domain: don't accept overly long hostnames
Make sure dns_name_normalize(), dns_name_concat(), dns_name_is_valid()
do not accept/generate invalidly long hostnames, i.e. longer than 253
characters.
Diffstat (limited to 'src/shared/dns-domain.c')
| -rw-r--r-- | src/shared/dns-domain.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/shared/dns-domain.c b/src/shared/dns-domain.c index 7a4093cc47..ab61eb3b6e 100644 --- a/src/shared/dns-domain.c +++ b/src/shared/dns-domain.c @@ -442,6 +442,9 @@ int dns_name_concat(const char *a, const char *b, char **_ret) { n += r; } + if (n > DNS_HOSTNAME_MAX) + return -EINVAL; + if (_ret) { if (!GREEDY_REALLOC(ret, allocated, n + 1)) return -ENOMEM; |