1 files changed, 5 insertions, 1 deletions
diff --git a/security/certverifier/NSSCertDBTrustDomain.cpp b/security/certverifier/NSSCertDBTrustDomain.cpp
index 1fe27b7602..b4e12fe9c4 100644
--- a/security/certverifier/NSSCertDBTrustDomain.cpp
+++ b/security/certverifier/NSSCertDBTrustDomain.cpp
@@ -245,7 +245,11 @@ NSSCertDBTrustDomain::GetCertTrust(EndEntityOrCA endEntityOrCA,
     // For TRUST, we only use the CERTDB_TRUSTED_CA bit, because Goanna hasn't
     // needed to consider end-entity certs to be their own trust anchors since
     // Goanna implemented nsICertOverrideService.
-    if (flags & CERTDB_TRUSTED_CA) {
+    // Of course, for this to work as expected, we need to make sure we're
+    // inquiring about the trust of a CA and not an end-entity. If an end-entity
+    // has the CERTDB_TRUSTED_CA bit set, Gecko does not consider it to be a
+    // trust anchor; it must inherit its trust.
+    if (flags & CERTDB_TRUSTED_CA && endEntityOrCA == EndEntityOrCA::MustBeCA) {
       if (policy.IsAnyPolicy()) {
         trustLevel = TrustLevel::TrustAnchor;
         return Success;