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-rw-r--r--src/resolve/resolved-dns-trust-anchor.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/resolve/resolved-dns-trust-anchor.c b/src/resolve/resolved-dns-trust-anchor.c
index 03c5b9406e..bcb31bd426 100644
--- a/src/resolve/resolved-dns-trust-anchor.c
+++ b/src/resolve/resolved-dns-trust-anchor.c
@@ -188,6 +188,14 @@ static int dns_trust_anchor_load_positive(DnsTrustAnchor *d, const char *path, u
r = safe_atou16(flags, &f);
if (r < 0)
return log_warning_errno(r, "Failed to parse DNSKEY flags field %s on line %s:%u", flags, path, line);
+ if ((f & DNSKEY_FLAG_ZONE_KEY) == 0) {
+ log_warning("DNSKEY lacks zone key bit set on line %s:%u", path, line);
+ return -EINVAL;
+ }
+ if ((f & DNSKEY_FLAG_REVOKE)) {
+ log_warning("DNSKEY is already revoked on line %s:%u", path, line);
+ return -EINVAL;
+ }
a = dnssec_algorithm_from_string(algorithm);
if (a < 0) {