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CVE-2026-34956

CVE.org · Published

Historical CVEs JSON AI instructions

Record status: Published
Identifier year (not publication year): 2026
Source publication: May 5, 2026
Source updated: Sep 1, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Openvswitch: open vswitch: denial of service via malformed ftp epasv command

A flaw was found in Open vSwitch. When Open vSwitch is configured with a conntrack flow using FTP helpers over the userspace datapath, a remote attacker can send a specially crafted FTP stream with an EPASV command exceeding 255 characters. This heap access error can lead to a crash, resulting in a Denial of Service (DoS) for the affected system.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Fast Datapath for RHEL 7

Vendor: Red Hat
Product: Fast Datapath for RHEL 7
Platforms: Unknown
Default status: affected
Package: openvswitch
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 7

Vendor: Red Hat
Product: Fast Datapath for RHEL 7
Platforms: Unknown
Default status: affected
Package: openvswitch2.10
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 7

Vendor: Red Hat
Product: Fast Datapath for RHEL 7
Platforms: Unknown
Default status: affected
Package: openvswitch2.11
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 7

Vendor: Red Hat
Product: Fast Datapath for RHEL 7
Platforms: Unknown
Default status: affected
Package: openvswitch2.12
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 7

Vendor: Red Hat
Product: Fast Datapath for RHEL 7
Platforms: Unknown
Default status: affected
Package: openvswitch2.13
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 7

Vendor: Red Hat
Product: Fast Datapath for RHEL 7
Platforms: Unknown
Default status: affected
Package: openvswitch-selinux-extra-policy
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 7

Vendor: Red Hat
Product: Fast Datapath for RHEL 7
Platforms: Unknown
Default status: affected
Package: ovn2.11
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 7

Vendor: Red Hat
Product: Fast Datapath for RHEL 7
Platforms: Unknown
Default status: affected
Package: ovn2.12
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: openvswitch2.11
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: openvswitch2.12
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: openvswitch2.13
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: openvswitch2.15
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: openvswitch2.16
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: openvswitch2.17
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: openvswitch3.1
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: openvswitch-selinux-extra-policy
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: ovn2.11
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 8

Vendor: Red Hat
Product: Fast Datapath for RHEL 8
Platforms: Unknown
Default status: affected
Package: ovn2.12
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch2.17
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch3.0
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch3.1
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch3.2
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch3.3
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch3.4
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch3.5
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch3.6
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Fast Datapath for RHEL 9

Vendor: Red Hat
Product: Fast Datapath for RHEL 9
Platforms: Unknown
Default status: affected
Package: openvswitch-selinux-extra-policy
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Enterprise Linux 7

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7
Platforms: Unknown
Default status: affected
Package: openvswitch
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenShift Container Platform 4

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4
Platforms: Unknown
Default status: affected
Package: openshift/ose-rhel-coreos-8
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenShift Container Platform 4

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4
Platforms: Unknown
Default status: affected
Package: openshift/ose-rhel-coreos-9
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenShift Container Platform 4

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4
Platforms: Unknown
Default status: affected
Package: openvswitch2.17
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenShift Container Platform 4

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4
Platforms: Unknown
Default status: affected
Package: openvswitch3.0
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenShift Container Platform 4

Vendor: Red Hat
Product: Red Hat OpenShift Container Platform 4
Platforms: Unknown
Default status: affected
Package: openvswitch3.1
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenStack Platform 13 (Queens)

Vendor: Red Hat
Product: Red Hat OpenStack Platform 13 (Queens)
Platforms: Unknown
Default status: affected
Package: rhosp13/openstack-neutron-openvswitch-agent
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenStack Platform 13 (Queens)

Vendor: Red Hat
Product: Red Hat OpenStack Platform 13 (Queens)
Platforms: Unknown
Default status: affected
Package: rhosp13/openstack-openvswitch-base
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenStack Platform 13 (Queens)

Vendor: Red Hat
Product: Red Hat OpenStack Platform 13 (Queens)
Platforms: Unknown
Default status: affected
Package: rhosp13/openstack-ovn-base
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenStack Platform 16.2

Vendor: Red Hat
Product: Red Hat OpenStack Platform 16.2
Platforms: Unknown
Default status: affected
Package: rhosp-openvswitch
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenStack Platform 16.2

Vendor: Red Hat
Product: Red Hat OpenStack Platform 16.2
Platforms: Unknown
Default status: affected
Package: rhosp-rhel8/openstack-neutron-openvswitch-agent
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenStack Platform 17.1

Vendor: Red Hat
Product: Red Hat OpenStack Platform 17.1
Platforms: Unknown
Default status: affected
Package: rhosp-openvswitch
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenStack Platform 17.1

Vendor: Red Hat
Product: Red Hat OpenStack Platform 17.1
Platforms: Unknown
Default status: affected
Package: rhosp-rhel9/openstack-neutron-openvswitch-agent
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat OpenStack Platform 18.0

Vendor: Red Hat
Product: Red Hat OpenStack Platform 18.0
Platforms: Unknown
Default status: affected
Package: rhoso-openvswitch
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.