CVE-2026-86845 Dpdk: dpdk: guest-triggered use-after-free and type confusion in vhost-crypto session cleanup
A guest-triggered use-after-free and type confusion in DPDK vhost-crypto allows attackers to execute code or cause denial of service on the host.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-86845?
CVE-2026-86845 is a medium-severity use after free vulnerability in Red Hat Fast Datapath for RHEL 10, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-825
Which versions are affected by CVE-2026-86845?
How do I fix CVE-2026-86845?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-86845 being exploited?
There is no known exploitation of CVE-2026-86845 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-86845, GHSA-7ww6-vqp6-25qm, UBUNTU-CVE-2026-86845.