UBUNTU-CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

UBUNTU-CVE-2026-24030

An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly...

CVE-2026-27854

CVE-2026-27854 affects dnsdist. The vulnerability arises when crafted DNS queries invoke DNSQuestion:getEDNSOptions in custom Lua code, which can reference a modified DNS packet and trigger a use-after-free, potentially causing a crash and denial of service. Connected advisories across Debian/SUS...

CVE-2026-27854 Use after free when parsing EDNS options in Lua

An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a...

CVE-2026-27853 Out-of-bounds write when rewriting large DNS packets

An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:changeName methods in custom Lua code. In some cases the rewritten packet might become larger than the initial response and even exceed 65535...

CVE-2026-27853

CVE-2026-27853 affects dnsdist. The vulnerability arises when crafted DNS responses are processed by Lua code via DNSQuestion:changeName or DNSResponse:changeName, potentially causing an out-of-bounds write and denial of service. Connected advisories confirm dnsdist in multiple distros; Debian re...

CVE-2026-24030 Unbounded memory allocation for DoQ and DoH3

An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly...

CVE-2026-24030 Unbounded memory allocation for DoQ and DoH3

An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly...

CVE-2026-24030

An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly...

CVE-2026-24030

DNSdist (DNS load balancer) has a vulnerability CVE-2026-24030 where processing DNS over QUIC or DNS over HTTP/3 payloads may allocate unbounded memory, potentially causing denial of service and, in some cases, an out-of-memory state. Debian’s advisory notes a fix in dnsdist for stable (trixie) v...

CVE-2026-24030 Unbounded memory allocation for DoQ and DoH3

An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly...

CVE-2026-24030

An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly...

CVE-2026-24029 DNS over HTTPS ACL bypass

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029

CVE-2026-24029 affects a DNS-over-HTTPS frontend using the nghttp2 provider. When the early_acl_drop (earlyACLDrop in Lua) option is disabled, the ACL check is skipped, permitting all clients to issue DoH queries regardless of the configured ACL. The default setting enables early_acl_drop, so the...

CVE-2026-24029 DNS over HTTPS ACL bypass

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029 DNS over HTTPS ACL bypass

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24029

When the earlyacldrop earlyACLDrop in Lua option is disabled default is enabled on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL...

CVE-2026-24028

An attacker might be able to trigger an out-of-bounds read by sending a crafted DNS response packet, when custom Lua code uses newDNSPacketOverlay to parse DNS packets. The out-of-bounds read might trigger a crash, leading to a denial of service, or access unrelated memory, leading to potential...