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TI-2026-74327 Aliases CVE-2026-86562GHSA-x59g-22jw-gfvw

Double-fetch race in DPDK vhost VDUSE control queue overflows heap

Priority LOW 35CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 2 fixed, 6 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

DPDK in Red Hat Enterprise Linux 9 and 10 contains a race condition in the lib/vhost VDUSE control queue handler. The handler fetches control-queue descriptors twice, so a value changed between the two reads (CWE-362) can overflow a host heap buffer with attacker-controlled content. A local user with low privileges can exploit this to fully compromise confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-08
Fix Partial Red Hat: 2 advisoriesRed Hat: 2 fixed, 6 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Enterprise Linux 10—2:25.11-2.el10_2Patch availableCNA
Red HatRed Hat Enterprise Linux 9—2:25.11-2.el9_8Patch availableCNA
Red HatFast Datapath for RHEL 10——No fix listedCNA
Red HatFast Datapath for RHEL 10——No fix listedCNA
Red HatFast Datapath for RHEL 10——No fix listedCNA
Red HatFast Datapath for RHEL 8——No fix listedCNA
Red HatFast Datapath for RHEL 8——No fix listedCNA
Red HatFast Datapath for RHEL 8——No fix listedCNA
Red HatFast Datapath for RHEL 8——No fix listedCNA
Red HatFast Datapath for RHEL 8——No fix listedCNA
Red HatFast Datapath for RHEL 8——No fix listedCNA
Red HatFast Datapath for RHEL 8——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatFast Datapath for RHEL 9——No fix listedCNA
Red HatRed Hat Enterprise Linux 8——No fix listedCNA
Red HatRed Hat OpenShift Container Platform 4——No fix listedCNA
Red HatRed Hat OpenShift Container Platform 4——Not affectedCNA
Red HatRed Hat OpenShift Container Platform 4——Not affectedCNA
Red HatRed Hat OpenStack Platform 13 (Queens)——No fix listedCNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 2:25.11-2.el10_2 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2:25.11-2.el9_8 Patch available CNA
  • Fast Datapath for RHEL 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fast Datapath for RHEL 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat OpenStack Platform 13 (Queens) VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 8

CPEVersionsRoleVendor
cpe:/o:redhat:enterprise_linux:10.210.2—Red Hat
cpe:/a:redhat:enterprise_linux:9::appstream9—Red Hat
cpe:/o:redhat:enterprise_linux:10::fastdatapath10—Red Hat
cpe:/o:redhat:enterprise_linux:8::fastdatapath8—Red Hat
cpe:/o:redhat:enterprise_linux:9::fastdatapath9—Red Hat
cpe:/a:redhat:enterprise_linux:88—Red Hat
cpe:/a:redhat:openshift:44—Red Hat
cpe:/a:redhat:openstack:1313—Red Hat
  • cpe:/o:redhat:enterprise_linux:10.2 Versions 10.2 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux:10::fastdatapath Versions 10 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux:8::fastdatapath Versions 8 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux:9::fastdatapath Versions 9 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:8 Versions 8 — ·Red Hat
  • cpe:/a:redhat:openshift:4 Versions 4 — ·Red Hat
  • cpe:/a:redhat:openstack:13 Versions 13 — ·Red Hat

Remediation

Update DPDK to 2:25.11-2.el10_2 on Red Hat Enterprise Linux 10 (RHSA-2026:94630) and to 2:25.11-2.el9_8 on Red Hat Enterprise Linux 9 (RHSA-2026:94629). Fast Datapath for RHEL 8, 9 and 10, Red Hat Enterprise Linux 8 and Red Hat OpenShift Container Platform 4 remain affected with Red Hat's plan listed as none available, and Red Hat OpenStack Platform 13 (Queens) has no fix planned.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Red Hat 2 advisories

  • RHSA-2026:94629 Released 2026-11-03 · Red Hat rating Important
    dpdk security update
    • Red Hat Enterprise Linux AppStream (v. 9) dpdk-2:25.11-2.el9_8, dpdk-devel-2:25.11-2.el9_8, dpdk-doc-2:25.11-2.el9_8 +1
  • RHSA-2026:94630 Released 2026-11-03 · Red Hat rating Important
    dpdk security update
    • Red Hat Enterprise Linux AppStream (v. 10) dpdk-2:25.11-2.el10_2, dpdk-devel-2:25.11-2.el10_2, dpdk-doc-2:25.11-2.el10_2 +1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Red Hat Fast Datapath for RHEL 10, Fast Datapath for RHEL 8 and 6 more products — RHSA-2026:94629

    14 records Highest priority Priority MEDIUM 1 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2026-74176 Out-of-bounds write in DPDK GSO header copyPriority MEDIUM 43
    • TI-2026-74386 DPDK vhost-crypto race condition enables out-of-bounds host accessPriority LOW 39
    • TI-2026-74382 DPDK VDUSE handler use-after-unmap after IOTLB invalidationPriority LOW 39
    Show all 14 records → Advisory →
  • Advisory ·

    Red Hat Fast Datapath for RHEL 10, Fast Datapath for RHEL 8 and 6 more products — RHSA-2026:94630

    14 records Highest priority Priority MEDIUM 1 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2026-74176 Out-of-bounds write in DPDK GSO header copyPriority MEDIUM 43
    • TI-2026-74386 DPDK vhost-crypto race condition enables out-of-bounds host accessPriority LOW 39
    • TI-2026-74382 DPDK VDUSE handler use-after-unmap after IOTLB invalidationPriority LOW 39
    Show all 14 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Fast Datapath for RHEL 10AffectedNo fix yet
Fast Datapath for RHEL 8AffectedNo fix yet
Fast Datapath for RHEL 9AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenStack Platform 13 (Queens)AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:94630
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:94629
Not affected: 1 product
  • Red Hat OpenShift Container Platform 4

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-86562
  2. 2026-10-16 CISA SSVC decision points changed
  3. 2026-10-16 Priority changed: MEDIUM → LOW
  4. 2026-10-16 Affected versions changed · Red Hat
  5. 2026-10-16 CVSS score added · Red Hat
  6. 2026-10-29 Affected versions changed · Red Hat
  7. 2026-11-02 Affected versions changed · Red Hat
  8. 2026-11-02 Affected versions changed · CNA
  9. 2026-11-03 Fix available: dpdk@2:25.11-2.el10_2 · CNA
  10. 2026-11-03 1 new reference · CNA
  11. 2026-11-03 Fix available: dpdk@2:25.11-2.el9_8 · CNA
  12. 2026-11-03 1 new reference · CNA
  13. 2026-11-03 Fix available: RHSA-2026:94630 · Red Hat
  14. 2026-11-03 Fix available: RHSA-2026:94629 · Red Hat
  15. 2026-11-03 Fix available: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 9) · Red Hat
  16. 2026-11-03 Alias added: GHSA-x59g-22jw-gfvw
  17. 2026-11-04 Affected versions changed · CNA

References

Advisory 2

Other 3

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences