CVE-2026-4438 Affecting glibc32 package, versions <2:2.39-121.0.1.ksplice1.el10_2


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.33% (25th percentile)

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  • Snyk IDSNYK-ORACLE10-GLIBC32-17996676
  • published16 Jul 2026
  • disclosed20 Mar 2026

Introduced: 20 Mar 2026

CVE-2026-4438  (opens in a new tab)

How to fix?

Upgrade Oracle:10 glibc32 to version 2:2.39-121.0.1.ksplice1.el10_2 or higher.
This issue was patched in ELSA-2026-500006.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc32 package and not the glibc32 package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.

CVSS Base Scores

version 3.1