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CVE-2026-93683

Dpdk: dpdk: guest-triggered out-of-bounds walk via vhost indirect descriptor length toctou

CVSS 3.1 6.4 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 3 Nov 2026 19:57:16 UTC. Read the latest advisory.

cve-program · CVE-2026-93683

Published

A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to walk past the validated mapping or heap copy. That can crash or disrupt the vhost process. Out-of-bounds bytes are consumed as descriptor fields for GPA translation and are not returned to the guest as payload. This is a residual issue in the non-contiguous indirect descriptor copy path introduced as part of the CVE-2018-1059 fix.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93683

Published

dpdk

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 10",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "dpdk",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "2:25.11-2.el10_2",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:10.2"
                    ]
                }

dpdk

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "dpdk",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "2:25.11-2.el9_8",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:enterprise_linux:9::appstream"
                    ]
                }

openvswitch3.5

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 10",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.5",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:10::fastdatapath"
                    ]
                }

openvswitch3.6

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 10",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.6",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:10::fastdatapath"
                    ]
                }

openvswitch2.11

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch2.11",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
                    ]
                }

openvswitch2.12

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch2.12",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
                    ]
                }

openvswitch2.13

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch2.13",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
                    ]
                }

openvswitch2.15

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch2.15",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
                    ]
                }

openvswitch2.16

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch2.16",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
                    ]
                }

openvswitch2.17

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch2.17",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
                    ]
                }

openvswitch3.1

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.1",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
                    ]
                }

openvswitch2.17

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch2.17",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
                    ]
                }

openvswitch3.0

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.0",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
                    ]
                }

openvswitch3.1

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.1",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
                    ]
                }

openvswitch3.2

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.2",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
                    ]
                }

openvswitch3.3

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.3",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
                    ]
                }

openvswitch3.4

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.4",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
                    ]
                }

openvswitch3.5

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.5",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
                    ]
                }

openvswitch3.6

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Fast Datapath for RHEL 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.6",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
                    ]
                }

dpdk

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "dpdk",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8"
                    ]
                }

openvswitch2.17

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat OpenShift Container Platform 4",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch2.17",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:openshift:4"
                    ]
                }

openvswitch3.0

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat OpenShift Container Platform 4",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.0",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:openshift:4"
                    ]
                }

openvswitch3.1

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat OpenShift Container Platform 4",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch3.1",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:openshift:4"
                    ]
                }

openvswitch

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat OpenStack Platform 13 (Queens)",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openvswitch",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/a:redhat:openstack:13"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

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