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Vulnerability · Published Oct 14, 2026 · Assigned by redhat

CVE-2026-86561Dpdk: dpdk: missing memory size validation before mmap in vhost memory region setup

Medium 6.5

In plain English

A medium-severity resource allocation without limits in Fast Datapath for RHEL 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 91.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in DPDK lib/vhost. Memory size is not adequately validated before mmap during vhost memory-region setup, which can lead to a host crash or memory corruption.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10dpdk2:25.11-2.el10_2ALSA-2026:94630
AlmaLinux:9dpdk2:25.11-2.el9_8ALSA-2026:94629
AlmaLinux:10dpdk-devel2:25.11-2.el10_2ALSA-2026:94630
AlmaLinux:9dpdk-devel2:25.11-2.el9_8ALSA-2026:94629
AlmaLinux:10dpdk-doc2:25.11-2.el10_2ALSA-2026:94630
AlmaLinux:9dpdk-doc2:25.11-2.el9_8ALSA-2026:94629
AlmaLinux:10dpdk-tools2:25.11-2.el10_2ALSA-2026:94630
AlmaLinux:9dpdk-tools2:25.11-2.el9_8ALSA-2026:94629
Debian:12dpdkno fix listedDEBIAN-CVE-2026-86561
Debian:13dpdk24.11.8-0+deb13u1DEBIAN-CVE-2026-86561
Debian:14dpdk25.11.4-1DEBIAN-CVE-2026-86561
Rocky Linux:10dpdk2:25.11-2.el10_2RLSA-2026:94630
Rocky Linux:9dpdk2:25.11-2.el9_8RLSA-2026:94629
Ubuntu:22.04:LTSdpdkno fix listedUBUNTU-CVE-2026-86561
Ubuntu:24.04:LTSdpdkno fix listedUBUNTU-CVE-2026-86561
Ubuntu:26.04:LTSdpdkno fix listedUBUNTU-CVE-2026-86561
Ubuntu:26.10dpdkno fix listedUBUNTU-CVE-2026-86561

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Fast Datapath for RHEL 10 see references
Red Hat Fast Datapath for RHEL 10 see references
Red Hat Fast Datapath for RHEL 10 see references
Red Hat Fast Datapath for RHEL 8 see references
Red Hat Fast Datapath for RHEL 8 see references
Red Hat Fast Datapath for RHEL 8 see references
Red Hat Fast Datapath for RHEL 8 see references
Red Hat Fast Datapath for RHEL 8 see references
Red Hat Fast Datapath for RHEL 8 see references
Red Hat Fast Datapath for RHEL 8 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Fast Datapath for RHEL 9 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenStack Platform 13 (Queens) see references

Weakness: CWE-770 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References