CVE-2026-0915 Affecting glibc package, versions <2.31-0ubuntu9.18+esm1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.02% (7th percentile)

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  • Snyk IDSNYK-UBUNTU2004-GLIBC-15028419
  • published4 Feb 2026
  • disclosed15 Jan 2026

Introduced: 15 Jan 2026

CVE-2026-0915  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 glibc to version 2.31-0ubuntu9.18+esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.

CVSS Base Scores

version 3.1