CVE-2026-0915

A flaw was found in glibc, the GNU C Library. When an application calls the getnetbyaddr or getnetbyaddr_r functions to resolve a network address, and the system's nsswitch.conf file is configured to use a DNS (Domain Name System) backend for network lookups, a query for a zero-valued network can lead to the disclosure of stack memory contents. This information is leaked to the configured DNS resolver, potentially allowing an attacker who controls the resolver to gain sensitive data from the affected system.

This vulnerability is rated Moderate for Red Hat products. It allows for information disclosure of stack contents to a configured DNS resolver when an application utilizes getnetbyaddr or getnetbyaddr_r with a DNS backend specified in nsswitch.conf for a zero-valued network query. This affects Red Hat Enterprise Linux and OpenShift Container Platform.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.