The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.
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Fixes

Solution

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Workaround

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History

Tue, 05 May 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Gnu
Gnu glibc
CPEs cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
Vendors & Products Gnu
Gnu glibc

Wed, 29 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat hummingbird
Weaknesses CWE-120
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat
Redhat hummingbird
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 28 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 28 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}


Tue, 28 Apr 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared The Gnu C Library
The Gnu C Library glibc
Vendors & Products The Gnu C Library
The Gnu C Library glibc

Tue, 28 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
Description The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.
Title Potential buffer overflow in ns_sprintrrf TSIG handling path
Weaknesses CWE-787
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: glibc

Published:

Updated: 2026-04-28T15:21:13.800Z

Reserved: 2026-04-02T17:18:02.654Z

Link: CVE-2026-5435

cve-icon Vulnrichment

Updated: 2026-04-28T15:21:08.263Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-28T13:19:22.290

Modified: 2026-05-05T17:38:37.030

Link: CVE-2026-5435

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-28T11:58:54Z

Links: CVE-2026-5435 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-29T02:30:07Z

Weaknesses