Fedora 43 : bind9-next (2026-ec095a4675)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-ec095a4675 advisory. Update to 9.21.22 rhbz2480122 Security Fixes: - Limit resolver server list size. CVE-2026-3592 - Fix GSS-API resource leak. CVE-2026-3039 - Disable...

CVE-2026-3591 A stack use-after-return flaw in SIG(0) handling code may enable ACL bypass

A use-after-return vulnerability exists in the named server when handling DNS queries signed with SIG0. Using a specially-crafted DNS request, an attacker may be able to cause an ACL to improperly mismatch an IP address. In a default-allow ACL denying only specific IP addresses, this may lead to...

CVE-2026-3591

CVE-2026-3591 - Summary A stack use-after-return vulnerability exists in the BIND 9 named server’s SIG(0) handling. A specially crafted DNS request can cause the ACL to mis-match an IP address, potentially bypassing access controls in default-allow ACLs (where all non-denied IPs are allowed). The...