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CVE-2026-3497

Ubuntu openssh; 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 Publicada: (hace 8 meses)

Descripción

Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpkt_disconnect() on an error, which does not terminate the process, allows an attacker to send an unexpected GSSAPI message type during the GSSAPI key exchange to the server, which will call the underlying function and continue the execution of the program without setting the related connection variables. As the variables are not initialized to NULL the code later accesses those uninitialized variables, accessing random memory, which could lead to undefined behavior. The recommended workaround is to use ssh_packet_disconnect() instead, which does terminate the process. The impact of the vulnerability depends heavily on the compiler flag hardening configuration.

Debilidad (CWE): CWE-908CWE-824

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

FabricanteProductoVersiones
ai inference server 3.2 —
ai inference server 3.3 —
canonical ubuntu linux 25.10
debian debian linux 11.0
openbsd openssh —
openshift 4.12 —
openshift 4.13 —
openshift 4.14 —
openshift 4.15 —
openshift 4.16 —
openshift 4.17 —
openshift 4.18 —
openshift 4.19 —
redhat enterprise linux 8.0
Red Hat Multicluster Engine for Kubernetes —
Red Hat OpenShift Pipelines —
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2 —
Red Hat Red Hat AI Inference Server 3.2 all versions
Red Hat Red Hat AI Inference Server 3.3 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 Telecommunications Update Service all versions
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 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 9.0 Update Services for SAP Solutions 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 Extended Update Support 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 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 Update Infrastructure 5 all versions
Red Hat RHEL-8 based Middleware Containers all versions
rhosemc 1.0 —
rhui 5 —
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) V3.1.6
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) V3.1.6
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) V3.1.6
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) V3.1.6
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) V3.1.6
Ubuntu openssh 1:10.0p1-5ubuntu5 – < 1:10.0p1-5ubuntu5.1, 1:9.6p1-3ubuntu13 – < 1:9.6p1-3ubuntu13.15, 1:8.9p1-3 – < 1:8.9p1-3ubuntu0.14

Referencias y parches

Coincidencias CPE (NVD) (9)
  • cpe:2.3:a:canonical:ubuntu_linux:25.10:*:*:*:*:*:*:*
  • cpe:2.3:a:openbsd:openssh:-:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

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