CVE-2026-86846
Dpdk: dpdk: guest can trigger out-of-bounds write by controlling avail ring index in vhost-crypto
- State
- Published
- Severity
- 6.5 Medium
- Published
- Oct 14, 2026
- Updated
- Oct 15, 2026
- Reserved
- Sep 8, 2026
Description
A flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is used without bounds checking, causing an out-of-bounds write in the host vhost-crypto backend.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H | redhat |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
Fast Datapath for RHEL 10Red Hat | |
Fast Datapath for RHEL 10Red Hat | |
Fast Datapath for RHEL 10Red Hat | |
Fast Datapath for RHEL 8Red Hat | |
Fast Datapath for RHEL 8Red Hat | |
Fast Datapath for RHEL 8Red Hat | |
Fast Datapath for RHEL 8Red Hat | |
Fast Datapath for RHEL 8Red Hat | |
Fast Datapath for RHEL 8Red Hat | |
Fast Datapath for RHEL 8Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Fast Datapath for RHEL 9Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenStack Platform 13 (Queens)Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-86846vdb-entry
- RHBZ#2529846issue-tracking
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