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.

rocky_linux RLSA-2026:94629: RLSA-2026:94629: dpdk security update (Important)

rocky_linux RLSA-2026:94630: RLSA-2026:94630: dpdk security update (Important)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-94630 advisory.

    [25.11-2]
    - Backport fixes for CVE-2026-86846 CVE-2026-86848 CVE-2026-86561       CVE-2026-86562 CVE-2026-86563 CVE-2026-86567 CVE-2026-86566       CVE-2026-86849 CVE-2026-86845 CVE-2026-86847 CVE-2026-86856       CVE-2026-86565 CVE-2026-93683 CVE-2026-100236

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:94630 advisory.

    The dpdk packages provide the Data Plane Development Kit, which is a set of libraries and drivers for fast     packet processing in the user space.

    Security Fix(es):

    * dpdk: dpdk: Missing memory size validation before mmap in vhost memory region setup (CVE-2026-86561)

    * dpdk: dpdk: Control-queue descriptor double-fetch overflows host heap in DPDK vhost (VDUSE)     (CVE-2026-86562)

    * dpdk: dpdk: Double offset bug in vhost log mapping calculation (CVE-2026-86563)

    * dpdk: dpdk: Guest can desynchronize virtqueue size from inflight descriptor table size, causing out-of-     bounds write (CVE-2026-86565)

    * dpdk: dpdk: Guest with runt RX descriptors underflows copy length in vhost enqueue (split and packed     rings) (CVE-2026-86566)

    * dpdk: dpdk: VDUSE handler fails to invalidate vring pointers when IOTLB is invalidated, leading to use-     after-unmap (CVE-2026-86567)

    * dpdk: dpdk: Guest-triggered use-after-free and type confusion in vhost-crypto session cleanup     (CVE-2026-86845)

    * dpdk: dpdk: Guest can trigger out-of-bounds write by controlling avail ring index in vhost-crypto     (CVE-2026-86846)

    * dpdk: dpdk: Guest can trigger infinite loop in vhost-crypto writeback chain cleanup (CVE-2026-86847)

    * dpdk: dpdk: Time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in     vhost-crypto (CVE-2026-86848)

    * dpdk: dpdk: Integer overflow combined with missing validation leads to host buffer overflow in vhost-     crypto (CVE-2026-86849)

    * dpdk: dpdk: Stack and heap buffer overflow in nfp vDPA driver (CVE-2026-86856)

    * dpdk: dpdk: Guest-triggered out-of-bounds walk via vhost indirect descriptor length TOCTOU     (CVE-2026-93683)

    * dpdk: dpdk: heap out-of-bounds read/write in GSO header copy (CVE-2026-100236)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:94629 advisory.

    The dpdk packages provide the Data Plane Development Kit, which is a set of libraries and drivers for fast     packet processing in the user space.

    Security Fix(es):

    * dpdk: dpdk: Missing memory size validation before mmap in vhost memory region setup (CVE-2026-86561)

    * dpdk: dpdk: Control-queue descriptor double-fetch overflows host heap in DPDK vhost (VDUSE)     (CVE-2026-86562)

    * dpdk: dpdk: Double offset bug in vhost log mapping calculation (CVE-2026-86563)

    * dpdk: dpdk: Guest can desynchronize virtqueue size from inflight descriptor table size, causing out-of-     bounds write (CVE-2026-86565)

    * dpdk: dpdk: Guest with runt RX descriptors underflows copy length in vhost enqueue (split and packed     rings) (CVE-2026-86566)

    * dpdk: dpdk: VDUSE handler fails to invalidate vring pointers when IOTLB is invalidated, leading to use-     after-unmap (CVE-2026-86567)

    * dpdk: dpdk: Guest-triggered use-after-free and type confusion in vhost-crypto session cleanup     (CVE-2026-86845)

    * dpdk: dpdk: Guest can trigger out-of-bounds write by controlling avail ring index in vhost-crypto     (CVE-2026-86846)

    * dpdk: dpdk: Guest can trigger infinite loop in vhost-crypto writeback chain cleanup (CVE-2026-86847)

    * dpdk: dpdk: Time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in     vhost-crypto (CVE-2026-86848)

    * dpdk: dpdk: Integer overflow combined with missing validation leads to host buffer overflow in vhost-     crypto (CVE-2026-86849)

    * dpdk: dpdk: Stack and heap buffer overflow in nfp vDPA driver (CVE-2026-86856)

    * dpdk: dpdk: Guest-triggered out-of-bounds walk via vhost indirect descriptor length TOCTOU     (CVE-2026-93683)

    * dpdk: dpdk: heap out-of-bounds read/write in GSO header copy (CVE-2026-100236)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-86562)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
375658	Oracle Linux 10 : dpdk (ELSA-2026-94630)	Nessus	Oracle Linux Local Security Checks	Local	high
375544	RHEL 10 : dpdk (RHSA-2026:94630)	Nessus	Red Hat Local Security Checks	Local	high
375542	RHEL 9 : dpdk (RHSA-2026:94629)	Nessus	Red Hat Local Security Checks	Local	high
365976	Linux Distros Unpatched Vulnerability : CVE-2026-86562	Nessus	Misc.	Local	high

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