CVE-2026-86849
dpdk: dpdk: Integer overflow combined with missing validation leads to host buffer overflow in vhost-crypto
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 15, 2026
Updated · November 4, 2026
Description
A flaw was found in DPDK lib/vhost vhost-crypto. Integer overflow in chain length checks, and missing length checks on the RSA path, can overflow a host buffer in the vhost-crypto backend.
Statement
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.
CVSS score applicability
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.
Mitigation
Do not attach a virtio-crypto vhost-user backend to untrusted guests.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-787 · Out-of-bounds Write