UBUNTU-CVE-2026-89092

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

CVE-2026-89092

A flaw was found in glibc, specifically within the nscd service. A remote attacker, operating a malicious Domain Name System DNS server, could send an overly large DNS response. This could trigger a stack overflow in the nscd service, causing it to crash and leading to degraded DNS resolution for...

CVE-2026-89092 Stack overflow in nscd due to unbounded alloca use

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

CVE-2026-89092

CVE-2026-89092 affects the nscd (Name Service Cache Daemon) service in GNU C Library 2.3.4 and later . The root cause is an unbounded alloca call that triggers a stack overflow when a malicious or compromised DNS server returns an excessively large response to a DNS query. The primary impact is a...

PT-2026-89678

Name of the Vulnerable Software and Affected Versions GNU C Library versions 2.3.4 and later Description The nscd service in the GNU C Library may experience a stack overflow when processing an oversized response from a malicious DNS server. This occurs when the service handles DNS records large...