CVE-2026-86845: Expired Pointer Dereference in Red Hat Fast Datapath for RHEL 10
Description
CVE-2026-86845 is a medium severity vulnerability in Red Hat Fast Datapath for RHEL 10 involving the DPDK vhost-crypto component. The flaw arises from session cleanup leaving a stale cached session pointer, and the data path failing to verify session types before attachment. This can lead to use-after-free or type confusion in the host vhost-crypto backend, potentially causing denial of service. No known exploits are reported in the wild. The vendor advisory is available but does not explicitly state patch status. The vulnerability requires local privileges to exploit and does not impact confidentiality or integrity.
CVSS v3.1
Score 6.5medium
Affected software
Red Hat
Fast Datapath for RHEL 10
Red Hat
Fast Datapath for RHEL 8
Red Hat
Fast Datapath for RHEL 9
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 8
Red Hat
Red Hat Enterprise Linux 9
Red Hat
Red Hat OpenShift Container Platform 4
Red Hat
Red Hat OpenStack Platform 13 (Queens)
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Red Hat Fast Datapath for RHEL 10 affects the DPDK lib/vhost vhost-crypto module. During session cleanup, a stale cached session pointer may remain, and the data path does not verify the session type before attaching it. This results in a use-after-free or type confusion condition within the host vhost-crypto backend. The CVSS 3.1 score is 6.5 (medium), with attack vector local, low attack complexity, low privileges required, no user interaction, scope changed, and impact limited to availability (denial of service).
Potential Impact
Successful exploitation can cause denial of service due to use-after-free or type confusion in the host vhost-crypto backend. There is no impact on confidentiality or integrity. The attack requires local privileges and does not involve user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-86845 for current remediation guidance. Until an official fix is applied, restrict local access to trusted users to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-09-08T14:54:06.881Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-86845","vendor":"Red Hat"}]
Threat ID: 6acfc4752cdf04f6569de059
Added to database: 10/14/2026, 18:05:41 UTC
Last enriched: 10/14/2026, 18:19:03 UTC
Last updated: 10/14/2026, 19:00:31 UTC
Views: 9
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.