> CVE-2026-4438

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PUBLISHED
2026-03-20 20:16
MODIFIED
2026-03-20 20:16
EPSS (Prob. Exploit)
0.31%
Top 75.5%
DATA SOURCES:
NVD 🔗 2026-03-20 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 OSV 🔗 2026-11-08 MSRC 🔗 2026-11-02

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> WEAKNESSES

CWE-20

> CWE DETAILED DESCRIPTIONS

CWE-20: Improper Input Validation - The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

> RED HAT SECURITY ADVISORIES

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Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
cert-manager Operator for Red Hat OpenShift 1.18.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
cert-manager Operator for Red Hat OpenShift 1.17.2
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
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Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
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Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
cert-manager Operator for Red Hat OpenShift 1.18.2

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

gethostbyaddr and gethostbyaddr_r return invalid DNS hostnames

AFFECTED PACKAGES:
Unknown / Unknown
19 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition
20/03/2026 20:16
Source: NVD
📊 ENRICHISSEMENT 01/04/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-20: Improper Input Validation - The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process...
Total des modifications: 1 Dernière mise à jour: 7 months ago

> REFERENCES

https://sourceware.org/bugzilla/show_bug.cgi?id=34015
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