CVE-2026-86847— Dpdk: dpdk: guest can trigger infinite loop in vhost-crypto writeback chain cleanup
Quick assessment
Affected
Red Hat Fast Datapath for RHEL 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 DPDK 的 lib/vhost 模块中的 vhost-crypto 组件中发现了一个缺陷。当映射客户机描述符失败时，回写链的清理过程可能跟随一个未初始化的 next 指针，从而导致主机端的 vhost-crypto 进程挂起或崩溃。
Affected Version Matrix 26
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Fast Datapath for RHEL 10 | any |
affected |
any |
affected | ||
any |
affected | ||
| Red Hat | Fast Datapath for RHEL 8 | any |
affected |
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
| Red Hat | Fast Datapath for RHEL 9 | any |
affected |
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
| … +1 more rows | |||
| Red Hat | Red Hat Enterprise Linux 10 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 8 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 9 | any |
affected |
| Red Hat | Red Hat OpenShift Container Platform 4 | any |
affected |
any |
affected | ||
any |
affected | ||
| Red Hat | Red Hat OpenStack Platform 13 (Queens) | any |
affected |
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I. Basic Information for CVE-2026-86847
Vulnerability Information
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Vulnerability Title
Dpdk: dpdk: guest can trigger infinite loop in vhost-crypto writeback chain cleanup
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in DPDK lib/vhost vhost-crypto. Write-back chain cleanup can follow an uninitialized next pointer when mapping a guest descriptor fails, causing the host vhost-crypto process to hang or crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用未经初始化的指针
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Fast Datapath for RHEL 10 | - |
cpe:/o:redhat:enterprise_linux:10::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 10 | - |
cpe:/o:redhat:enterprise_linux:10::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 10 | - |
cpe:/o:redhat:enterprise_linux:10::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 8 | - |
cpe:/o:redhat:enterprise_linux:8::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 8 | - |
cpe:/o:redhat:enterprise_linux:8::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 8 | - |
cpe:/o:redhat:enterprise_linux:8::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 8 | - |
cpe:/o:redhat:enterprise_linux:8::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 8 | - |
cpe:/o:redhat:enterprise_linux:8::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 8 | - |
cpe:/o:redhat:enterprise_linux:8::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 8 | - |
cpe:/o:redhat:enterprise_linux:8::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Fast Datapath for RHEL 9 | - |
cpe:/o:redhat:enterprise_linux:9::fastdatapath
|
|
| Red Hat | Red Hat Enterprise Linux 10 | - |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenStack Platform 13 (Queens) | - |
cpe:/a:redhat:openstack:13
|
|
II. Public POCs for CVE-2026-86847
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-86847 (2)
-
-
2529847 – (CVE-2026-86847) CVE-2026-86847 dpdk: dpdk: Guest can trigger infinite loop in vhost-crypto writeback chain cleanup issue-tracking x_refsource_REDHAT
Same Patch Batch · Red Hat · 2026-10-14 · 25 CVEs total
| CVE-2026-86848 | 8.8 HIGH | Dpdk: dpdk: time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds |
| CVE-2026-86567 | 8.8 HIGH | Dpdk: dpdk: vduse handler fails to invalidate vring pointers when iotlb is invalidated, le |
| CVE-2026-104795 | 8.8 HIGH | Insights-runtime-extractor: insights-runtime-extractor: container escape via privileged bi |
| CVE-2026-100236 | 8.6 HIGH | Dpdk: dpdk: heap out-of-bounds read/write in gso header copy |
| CVE-2026-86476 | 8.4 HIGH | Gstreamer1-plugins-base: gst-plugins-base: heap buffer overflow via unvalidated gstvideome |
| CVE-2026-86565 | 8.2 HIGH | Dpdk: dpdk: guest can desynchronize virtqueue size from inflight descriptor table size, ca |
| CVE-2026-90954 | 7.8 HIGH | Busybox: busybox: dpkg-deb extraction-root escape via per-ar-member deferred symlink flush |
| CVE-2026-86563 | 7.8 HIGH | Dpdk: dpdk: double offset bug in vhost log mapping calculation |
| CVE-2026-86562 | 7.8 HIGH | Dpdk: dpdk: control-queue descriptor double-fetch overflows host heap in dpdk vhost (vduse |
| CVE-2026-88829 | 7.2 HIGH | Busybox: busybox: http request smuggling via pipelined requests in httpd reverse proxy |
| CVE-2026-86856 | 6.5 MEDIUM | Dpdk: dpdk: stack and heap buffer overflow in nfp vdpa driver |
| CVE-2026-100229 | 6.5 MEDIUM | Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: out-of-bounds write in gst_h266_ |
| CVE-2026-86561 | 6.5 MEDIUM | Dpdk: dpdk: missing memory size validation before mmap in vhost memory region setup |
| CVE-2026-86566 | 6.5 MEDIUM | Dpdk: dpdk: guest with runt rx descriptors underflows copy length in vhost enqueue (split |
| CVE-2026-86845 | 6.5 MEDIUM | Dpdk: dpdk: guest-triggered use-after-free and type confusion in vhost-crypto session clea |
| CVE-2026-86846 | 6.5 MEDIUM | Dpdk: dpdk: guest can trigger out-of-bounds write by controlling avail ring index in vhost |
| CVE-2026-86849 | 6.5 MEDIUM | Dpdk: dpdk: integer overflow combined with missing validation leads to host buffer overflo |
| CVE-2026-93683 | 6.4 MEDIUM | Dpdk: dpdk: guest-triggered out-of-bounds walk via vhost indirect descriptor length toctou |
| CVE-2026-100231 | 6.1 MEDIUM | Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: heap out-of-bounds write in asfm |
| CVE-2026-109968 | 5.5 MEDIUM | Clevis: clevis: pkcs#11 luks passphrase logged in plaintext to world-readable file |
Showing top 20 of 25 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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-
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