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CVE-2026-46214

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix accept queue count leak on transport mismatch virtio_transport_recv_listen() calls sk_acceptq_added() before…

Published May 28, 2026EPSS 0.17%

Overview

CVE-2026-46214 is a medium-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

vsock/virtio: fix accept queue count leak on transport mismatch

virtio_transport_recv_listen() calls sk_acceptq_added() before

vsock_assign_transport(). If vsock_assign_transport() fails or

selects a different transport, the error path returns without

calling sk_acceptq_removed(), permanently incrementing

sk_ack_backlog.

After approximately backlog+1 such failures, sk_acceptq_is_full()

returns true, causing the listener to reject all new connections.

Fix by moving sk_acceptq_added() to after the transport validation,

matching the pattern used by vmci_transport and hyperv_transport.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/29371f3cc83e2a92265b4768014a30b80234112fRefgit.kernel.org/stable/c/2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391fRefgit.kernel.org/stable/c/52bcb57a4e8a0865a76c587c2451906342ae1b2dRefgit.kernel.org/stable/c/65c484726e74013a2ec7ba67a34d87760ae8f390Refgit.kernel.org/stable/c/6d3275fc4ed968938e1d556c344798046776668dRefgit.kernel.org/stable/c/e9edf9893cf26d060705c910a9b62d8cc96ed56aRefgit.kernel.org/stable/c/f66c7904fb6f0e420a654bc90909e64a25d00896Refgit.kernel.org/stable/c/fd51e810affa38d735d04261e673b2a5fe9c8665

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46214?

CVE-2026-46214 is a medium-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-46214?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-46214?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-46214?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46214 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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