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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-6238 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://inbox.sourceware.org/libc-announce/[email protected]/T/#u GNU C Library
https://sourceware.org/bugzilla/show_bug.cgi?id=34069 GNU C Library

Weakness Enumeration

CWE-ID CWE Name Source
CWE-126 Buffer Over-read GNU C Library  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-6238
NVD Published Date:
04/28/2026
NVD Last Modified:
04/28/2026
Source:
GNU C Library