CVE-2026-86845
Dpdk: dpdk: guest-triggered use-after-free and type confusion in vhost-crypto session cleanup
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A flaw was found in DPDK lib/vhost vhost-crypto. Session cleanup can leave a stale cached session pointer, and the data path does not check the session type before attaching it, leading to use-after-free or type confusion in the host vhost-crypto backend.
Timeline
ID reserved
By redhat
- 36 days later
· 36 days later
Published
- 23 days later
· 23 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | Medium6.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
Red Hat · Red Hat Enterprise Linux 10
- unaffected 2:25.11-2.el10_2 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 2:25.11-2.el9_8 – < *
Red Hat · Fast Datapath for RHEL 10
All versions: affected
Red Hat · Fast Datapath for RHEL 10
All versions: affected
Red Hat · Fast Datapath for RHEL 10
All versions: affected
Red Hat · Fast Datapath for RHEL 8
All versions: affected
Red Hat · Fast Datapath for RHEL 8
All versions: affected
Red Hat · Fast Datapath for RHEL 8
All versions: affected
Red Hat · Fast Datapath for RHEL 8
All versions: affected
Red Hat · Fast Datapath for RHEL 8
All versions: affected
Red Hat · Fast Datapath for RHEL 8
All versions: affected
Red Hat · Fast Datapath for RHEL 8
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Fast Datapath for RHEL 9
All versions: affected
Red Hat · Red Hat Enterprise Linux 8
All versions: affected
Red Hat · Red Hat OpenShift Container Platform 4
All versions: affected
Red Hat · Red Hat OpenShift Container Platform 4
All versions: affected
Red Hat · Red Hat OpenShift Container Platform 4
All versions: affected
Red Hat · Red Hat OpenStack Platform 13 (Queens)
All versions: affected
What to do
Workaround: Do not attach a virtio-crypto vhost-user backend to untrusted guests.
References (4)
- RHSA-2026:94629 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:94630 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-86845 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2529844 (opens in a new tab)issue-trackingx_refsource_REDHAT
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-86845)Record last updated .