CVE-2026-6238 Affecting glibc-static package, versions <0:2.34-274.0.1.el9_8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.36% (29th percentile)

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  • Snyk IDSNYK-ORACLE9-GLIBCSTATIC-18278437
  • published23 Jul 2026
  • disclosed28 Apr 2026

Introduced: 28 Apr 2026

CVE-2026-6238  (opens in a new tab)

How to fix?

Upgrade Oracle:9 glibc-static to version 0:2.34-274.0.1.el9_8 or higher.
This issue was patched in ELSA-2026-42952.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc-static package and not the glibc-static package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to validate the RDATA content against the RDATA length in a DNS response when processing LOC, CERT, TKEY or TSIG records, which may allow an attacker to craft a DNS response, causing a target application to crash or read uninitialized memory.

These functions are for application debugging only and hence not in the path of code executed by the DNS resolver. Further, they have been deprecated since version 2.34 and should not be used by any new applications. Applications should consider porting away from these interfaces since they may be removed in future versions.

CVSS Base Scores

version 3.1