CVE-2026-86848— Dpdk: dpdk: time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in vhost-crypto
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 vhost-crypto 组件中发现了一个漏洞。该漏洞涉及间接描述符快照过程中对客户机描述符的下一个索引进行了双重获取（double-fetch），恶意客户机可利用此问题导致主机后端发生越界访问。
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-2026-86848
Vulnerability Information
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Vulnerability Title
Dpdk: dpdk: time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in vhost-crypto
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
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-2026-86848
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-86848 (2)
Same Patch Batch · Red Hat · 2026-10-14 · 25 CVEs total
| CVE-2026-104795 | 8.8 HIGH | Insights-runtime-extractor: insights-runtime-extractor: container escape via privileged bi |
| CVE-2026-86567 | 8.8 HIGH | Dpdk: dpdk: vduse handler fails to invalidate vring pointers when iotlb is invalidated, le |
| 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-2026-86847 | 6.5 MEDIUM | Dpdk: dpdk: guest can trigger infinite loop in vhost-crypto writeback chain cleanup |
| 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 → →
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V. Comments for CVE-2026-86848
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