CVE-2026-86845

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.

A guest with a virtio-crypto vhost-user device can trigger this flaw. Red Hat has rated this as having a security impact of Moderate. Product impact depends on whether vhost-crypto is built and enabled.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Do not attach a virtio-crypto vhost-user backend to untrusted guests.