CVE-2026-52690 Spoofed answers can mark an authoritative non-EDNS capable

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail...

DEBIAN-CVE-2025-31498

c-ares is an asynchronous resolver library. From 1.32.3 through 1.34.4, there is a use-after-free in readanswers when processanswer may re-enqueue a query either due to a DNS Cookie Failure or when the upstream server does not properly support EDNS, or possibly on TCP queries if the remote closed...

UBUNTU-CVE-2025-31498

c-ares is an asynchronous resolver library. From 1.32.3 through 1.34.4, there is a use-after-free in readanswers when processanswer may re-enqueue a query either due to a DNS Cookie Failure or when the upstream server does not properly support EDNS, or possibly on TCP queries if the remote closed...

SUSE CVE-2017-12132

The DNS stub resolver in the GNU C Library aka glibc or libc6 before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation...

EulerOS 2.0 SP2 : glibc (EulerOS-SA-2019-1844)

According to the versions of the glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Stack-based buffer overflow in the glob implementation in GNU C Library aka glibc before 2.24, when GLOBALTDIRFUNC is used, allows...

DNS Spoofing

GNU C Library is vulnerable to DNS spoofing attacks. A remote unauthenticated attacker could potentially simplify off-path DNS spoofing attacks due to IP fragmentation. This affects some unknown processing of the component EDNS Support...