A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.

ciq crlsa-2026_94629: CRLSA-2026_94629: Important: dpdk security update

ciq crlsa-2026_94630: CRLSA-2026_94630: Important: dpdk security update

miracle_linux AXSA:2026-2256:03: AXSA:2026-2256:03: dpdk-25.11-2.el9_8

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:94629 advisory.

    * 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)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-94629 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 RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:94630 advisory.

    * 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)

Tenable has extracted the preceding description block directly from the RockyLinux 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 RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:94629 advisory.

    * 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)

Tenable has extracted the preceding description block directly from the RockyLinux 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 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 version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:1186 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-86848:
    A flaw was found in DPDK lib/vhost vhost-crypto. The indirect-descriptor snapshot double-fetches a guest     descriptor next index, allowing a malicious guest to cause an out-of-bounds access in the host backend.

    CVE-2026-86565:
    A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor     table size, causing an out-of-bounds write in the host vhost process.

    CVE-2026-100236:
    A flaw was found in the DPDK GSO library. When software GSO copies packet headers into a new mbuf, it does     not check that the header fits in the source first segment or in the destination buffer, and a header     longer than the configured GSO segment size can underflow the payload-size calculation. A remote or guest-     supplied packet processed with software GSO can trigger an out-of-bounds read or write.

Tenable has extracted the preceding description block directly from the Tencent 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 guest can desynchronize virtqueue size from inflight descriptor     table size, causing an out-of-bounds write in the host vhost process. (CVE-2026-86565)

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

ID	Name	Product	Family	Type	Severity
376199	AlmaLinux 9 : dpdk (ALSA-2026:94629)	Nessus	Alma Linux Local Security Checks	Local	high
376190	Oracle Linux 9 : dpdk (ELSA-2026-94629)	Nessus	Oracle Linux Local Security Checks	Local	high
375854	RockyLinux 10 : dpdk (RLSA-2026:94630)	Nessus	Rocky Linux Local Security Checks	Local	high
375847	RockyLinux 9 : dpdk (RLSA-2026:94629)	Nessus	Rocky Linux Local Security Checks	Local	high
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
372250	TencentOS Server 4: dpdk (TSSA-2026:1186)	Nessus	Tencent Local Security Checks	Local	high
365945	Linux Distros Unpatched Vulnerability : CVE-2026-86565	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-86565

high

Tenable Plugins

Coming Soon

high

high

high

high

high

high

high

high

high