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CVE.org (no NVD analysis yet)· CNA redhat

CVE-2026-86562: Dpdk: dpdk: control-queue descriptor double-fetch overflows host heap in dpdk vhost (vduse)

HighCVSS 7.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: azl3 dpdk 23.11.3-1 on Azure Linux 3.0 23.11.8-1.

Low priority for now. Upgrade to azl3 dpdk 23.11.3-1 on Azure Linux 3.0 23.11.8-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in DPDK lib/vhost. A TOCTOU double-fetch of control-queue descriptors allows a heap buffer overflow with attacker-controlled content in the VDUSE control-queue handler.

Published
Oct 14, 2026
Updated
Nov 11, 2026
EPSS
0.1% · 7th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Fast Datapath for RHEL 10

    • all versionsaffected
    • all versionsaffected
    • all versionsaffected

  • Red Hat Fast Datapath for RHEL 8

    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsunknown
    • all versionsaffected
    • all versionsaffected
    • all versionsunknown

  • Red Hat Fast Datapath for RHEL 9

    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 10

    • 2:25.11-2.el10_2 and laternot affected · rpm
    • 2:25.11-2.el10_3 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8

    • 0:23.11-3.el8_10 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9

    • 2:25.11-2.el9_8 and laternot affected · rpm
    • 2:25.11-2.el9_9 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4

    • all versionsaffected
    • all versionsunknown
    • all versionsunknown

  • Red Hat Red Hat OpenStack Platform 13 (Queens)

    • all versionsaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10dpdkbefore 2:25.11-2.el10_22:25.11-2.el10_2
AlmaLinux:10dpdk-develbefore 2:25.11-2.el10_22:25.11-2.el10_2
AlmaLinux:10dpdk-docbefore 2:25.11-2.el10_22:25.11-2.el10_2
AlmaLinux:10dpdk-toolsbefore 2:25.11-2.el10_22:25.11-2.el10_2
AlmaLinux:8dpdkbefore 23.11-3.el8_1023.11-3.el8_10
AlmaLinux:8dpdk-develbefore 23.11-3.el8_1023.11-3.el8_10
AlmaLinux:8dpdk-docbefore 23.11-3.el8_1023.11-3.el8_10
AlmaLinux:8dpdk-toolsbefore 23.11-3.el8_1023.11-3.el8_10
AlmaLinux:9dpdkbefore 2:25.11-2.el9_82:25.11-2.el9_8
AlmaLinux:9dpdk-develbefore 2:25.11-2.el9_82:25.11-2.el9_8
AlmaLinux:9dpdk-docbefore 2:25.11-2.el9_82:25.11-2.el9_8
AlmaLinux:9dpdk-toolsbefore 2:25.11-2.el9_82:25.11-2.el9_8
Debian:12dpdkfrom 0—
Debian:13dpdkbefore 24.11.8-0+deb13u124.11.8-0+deb13u1
Debian:14dpdkbefore 25.11.4-125.11.4-1
openSUSE:Tumbleweeddpdkbefore 25.11.4-1.125.11.4-1.1
Rocky Linux:10dpdkbefore 2:25.11-2.el10_22:25.11-2.el10_2
Rocky Linux:8dpdkbefore 0:23.11-3.el8_100:23.11-3.el8_10
Rocky Linux:9dpdkbefore 2:25.11-2.el9_82:25.11-2.el9_8
SUSE:Linux Enterprise Module for Server Applications 15 SP7dpdkbefore 24.11.8-150700.3.20.124.11.8-150700.3.20.1
SUSE:Linux Enterprise Module for Server Applications 15 SP7dpdk-thunderxbefore 24.11.8-150700.3.20.124.11.8-150700.3.20.1

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-86848Dpdk: dpdk: time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in vhost-crypto
    35Monitor
  • CVE-2026-86567Dpdk: dpdk: vduse handler fails to invalidate vring pointers when iotlb is invalidated, leading to use-after-unmap
    35Monitor
  • CVE-2026-100236Dpdk: dpdk: heap out-of-bounds read/write in gso header copy
    34Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-86561Oct 14, 2026 · Dpdk: dpdk: missing memory size validation before mmap in vhost memory region setup
    26Monitor
  • ← EarlierCVE-2026-93683Oct 14, 2026 · Dpdk: dpdk: guest-triggered out-of-bounds walk via vhost indirect descriptor length toctou
    25Monitor
  • Later →CVE-2026-86563Oct 14, 2026 · Dpdk: dpdk: double offset bug in vhost log mapping calculation
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 dpdk 23.11.3-1 on Azure Linux 3.023.11.8-1 · Release NotesMicrosoft (MSRC)
almalinux:dpdk2:25.11-2.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:dpdk-devel2:25.11-2.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:dpdk-doc2:25.11-2.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:dpdk-tools2:25.11-2.el9_8 · AlmaLinux:9Package registry (OSV)
debian:dpdk24.11.8-0+deb13u1 · Debian:13Package registry (OSV)
debian:dpdk25.11.4-1 · Debian:14Package registry (OSV)
opensuse:dpdk25.11.4-1.1 · openSUSE:TumbleweedPackage registry (OSV)
rocky linux:dpdk2:25.11-2.el9_8 · Rocky Linux:9Package registry (OSV)
suse:dpdk24.11.8-150700.3.20.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP7Package registry (OSV)
suse:dpdk-thunderx24.11.8-150700.3.20.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recorded+3 d
  3. TodayNov 14, 2026+31 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Not on record for this CVE: patch commit or PR link · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓
  2. SSVC exploitation— → none
  3. Exploit maturity— → none

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records