8.2High

CVE-2026-5260Gnutls: gnutls: information disclosure via heap overread in rsa key exchange

gnutls; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Red Hat Enterprise Linux 8 Published: (5 months ago)

Description

A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.

Weakness (CWE): CWE-126

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
cert manager 1.17 —
cert manager 1.18 —
cert manager 1.20 —
discovery 2 —
enterprise linux 8 —
enterprise linux 9 —
openshift 4.12 —
openshift 4.13 —
openshift 4.14 —
openshift 4.15 —
openshift 4.16 —
openshift 4.17 —
openshift 4.18 —
openshift 4.19 —
openshift 4.20 —
openshift 4.21 —
openshift 4.22 —
openshift ai 3.4 —
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 all versions
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 all versions
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 all versions
Red Hat Red Hat Discovery 2 all versions
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support all versions
Red Hat Red Hat Enterprise Linux 6 —
Red Hat Red Hat Enterprise Linux 7 —
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service all versions
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support all versions
Red Hat Red Hat Hardened Images all versions
Red Hat Red Hat OpenShift AI 3.4 all versions
Red Hat Red Hat OpenShift Container Platform 4 —
Red Hat Red Hat OpenShift Container Platform 4.12 all versions
Red Hat Red Hat OpenShift Container Platform 4.13 all versions
Red Hat Red Hat OpenShift Container Platform 4.14 all versions
Red Hat Red Hat OpenShift Container Platform 4.15 all versions
Red Hat Red Hat OpenShift Container Platform 4.16 all versions
Red Hat Red Hat OpenShift Container Platform 4.17 all versions
Red Hat Red Hat OpenShift Container Platform 4.18 all versions
Red Hat Red Hat OpenShift Container Platform 4.19 all versions
Red Hat Red Hat OpenShift Container Platform 4.20 all versions
Red Hat Red Hat OpenShift Container Platform 4.21 all versions
Red Hat Red Hat OpenShift Container Platform 4.22 all versions
Red Hat Red Hat OpenShift Container Platform 5 all versions
Red Hat Red Hat Update Infrastructure 5 all versions
rhel aus 8.4 —
rhel aus 8.6 —
rhel e4s 8.8 —
rhel e4s 9.2 —
rhel e4s 9.4 —
rhel eus 9.6 —
rhel eus long life 8.4 —
rhel eus long life 8.6 —
rhel tus 8.8 —
rhui 5 —
— gnutls 0

References and patches