Read the docs
TI-2021-02770 Aliases CVE-2021-3839GHSA-c4mq-4x72-rfxj

Out-of-bounds read in dpdk

Priority LOW 36CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 2 fixed, 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

A flaw was found in the vhost library in DPDK. Function vhost_user_set_inflight_fd() does not validate `msg->payload.inflight.num_queues`, possibly causing out-of-bounds memory read/write. Any software using DPDK vhost library may crash as a result of this vulnerability.

Why it matters now

EPSS 0.01699 77th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 2 fixed, 4 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—dpdkFixed in dpdk v22.03—No fix listedCNA
  • dpdk Vendor— Affected Fixed in dpdk v22.03 Fixed in — No fix listed CNA

CPE configurations NVD · 10

CPEVersionsRoleVendor
cpe:2.3:a:dpdk:data_plane_development_kit:*:*:*:*:*:*:*:*before 22.03VulnerableDPDK
cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc1:*:*:*:*:*:*22.03 rc1VulnerableDPDK
cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc2:*:*:*:*:*:*22.03 rc2VulnerableDPDK
cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc3:*:*:*:*:*:*22.03 rc3VulnerableDPDK
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*9.0VulnerableRed Hat
cpe:2.3:a:redhat:enterprise_linux_fast_datapath:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:redhat:enterprise_linux_fast_datapath:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
  • cpe:2.3:a:dpdk:data_plane_development_kit:*:*:*:*:*:*:*:* Versions before 22.03 Vulnerable ·DPDK
  • cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc1:*:*:*:*:*:* Versions 22.03 rc1 Vulnerable ·DPDK
  • cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc2:*:*:*:*:*:* Versions 22.03 rc2 Vulnerable ·DPDK
  • cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc3:*:*:*:*:*:* Versions 22.03 rc3 Vulnerable ·DPDK
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:enterprise_linux_fast_datapath:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:enterprise_linux_fast_datapath:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat

Remediation

Red Hat 4 advisories

  • RHSA-2022:8263 Released 2022-11-15 · Red Hat rating Important
    dpdk security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 9) dpdk-2:21.11.2-1.el9_1, dpdk-devel-2:21.11.2-1.el9_1, dpdk-doc-2:21.11.2-1.el9_1 +1
  • RHSA-2022:4786 Released 2022-05-27 · Red Hat rating Moderate
    openvswitch2.13 security update
    • Fast Datapath for Red Hat Enterprise Linux 8 openvswitch2.13-2.13.0-180.el8fdp
  • RHSA-2022:4788 Released 2022-05-27 · Red Hat rating Moderate
    openvswitch2.16 security update
    • Fast Datapath for Red Hat Enterprise Linux 8 openvswitch2.16-2.16.0-74.el8fdp
Show 1 more Red Hat advisories
  • RHSA-2022:4787 Released 2022-05-27 · Red Hat rating Moderate
    openvswitch2.15 security update
    • Fast Datapath for Red Hat Enterprise Linux 8 openvswitch2.15-2.15.0-99.el8fdp

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Fast Datapath for RHEL 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Virtualization 4AffectedNo fix planned: Will not fix
Fast Datapath for Red Hat Enterprise Linux 8Fixed RHSA-2022:4786, RHSA-2022:4787, RHSA-2022:4788
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:8263
Not affected: 5 products
  • Fast Datapath for RHEL 7
  • Fast Datapath for RHEL 8
  • Fast Datapath for Red Hat Enterprise Linux 8
  • Red Hat Ceph Storage 3
  • Red Hat Ceph Storage 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3839
  2. 2026-10-03 Alias added: GHSA-c4mq-4x72-rfxj

References

Patch 2

Advisory 1

Sources

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