dpdk: A flaw was found in DPDK lib/vhost
CVE-2026-86566 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-86566, released October 21, 2026. It is not reported as exploited. Patch Radar priority: High.
A flaw was found in DPDK lib/vhost. A guest with runt RX descriptors can underflow the copy length in vhost enqueue, causing a denial of service in a shared vhost backend such as OVS-DPDK.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| dpdk · Debian 13.5 (trixie) | 24.11.8-0+deb13u1 | DEBIAN-CVE-2026-86566 | Oct 21, 2026 |
| dpdk · Debian 14 | 25.11.4-1 | DEBIAN-CVE-2026-86566 | Oct 21, 2026 |
| dpdk · RHEL 10 | 25.11-2.el10_2 | RHSA-2026:94630 | Nov 4, 2026 |
| dpdk · RHEL 9 | 2:25.11-2.el9_8 | RHSA-2026:94629 | Nov 4, 2026 |
| dpdk · almalinux 10 | 2:25.11-2.el10_2 | ALSA-2026:94630 | Nov 7, 2026 |
| dpdk · almalinux 9 | 2:25.11-2.el9_8 | ALSA-2026:94629 | Nov 7, 2026 |
| dpdk · ol 10 | 2:25.11-2.el10_2 | ELSA-2026-94630 | Nov 7, 2026 |
| dpdk · ol 9 | 2:25.11-2.el9_8 | ELSA-2026-94629 | Nov 7, 2026 |
| dpdk · rocky 10 | 2:25.11-2.el10_2 | RLSA-2026:94630 | Nov 7, 2026 |
| dpdk · rocky 9 | 2:25.11-2.el9_8 | RLSA-2026:94629 | Nov 7, 2026 |
| dpdk-devel · RHEL 9 | 2:25.11-2.el9_8 | RHSA-2026:94629 | Nov 4, 2026 |
| dpdk-devel · almalinux 10 | 2:25.11-2.el10_2 | ALSA-2026:94630 | Nov 7, 2026 |
| dpdk-devel · almalinux 9 | 2:25.11-2.el9_8 | ALSA-2026:94629 | Nov 7, 2026 |
| dpdk-devel · ol 10 | 2:25.11-2.el10_2 | ELSA-2026-94630 | Nov 7, 2026 |
| dpdk-devel · ol 9 | 2:25.11-2.el9_8 | ELSA-2026-94629 | Nov 7, 2026 |
| dpdk-doc · RHEL 9 | 2:25.11-2.el9_8 | RHSA-2026:94629 | Nov 4, 2026 |
| dpdk-doc · almalinux 10 | 2:25.11-2.el10_2 | ALSA-2026:94630 | Nov 7, 2026 |
| dpdk-doc · almalinux 9 | 2:25.11-2.el9_8 | ALSA-2026:94629 | Nov 7, 2026 |
| dpdk-doc · ol 10 | 2:25.11-2.el10_2 | ELSA-2026-94630 | Nov 7, 2026 |
| dpdk-doc · ol 9 | 2:25.11-2.el9_8 | ELSA-2026-94629 | Nov 7, 2026 |
| dpdk-tools · RHEL 9 | 2:25.11-2.el9_8 | RHSA-2026:94629 | Nov 4, 2026 |
| dpdk-tools · almalinux 10 | 2:25.11-2.el10_2 | ALSA-2026:94630 | Nov 7, 2026 |
| dpdk-tools · almalinux 9 | 2:25.11-2.el9_8 | ALSA-2026:94629 | Nov 7, 2026 |
| dpdk-tools · ol 10 | 2:25.11-2.el10_2 | ELSA-2026-94630 | Nov 7, 2026 |
| dpdk-tools · ol 9 | 2:25.11-2.el9_8 | ELSA-2026-94629 | Nov 7, 2026 |
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