CVE-2026-46214: Linux vulnerability

CVE-2026-46214: vsock/virtio: fix accept queue count leak on transport mismatch

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.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 15, 2026, 01:21 UTC (UTC+00:00)

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 28, 2026, 09:40 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

1ADP providers

10Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
May 13, 2026, 15:03 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
May 28, 2026, 09:40 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 15, 2026, 01:21 UTC (UTC+00:00)

ADP provider summaries

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391fCVE reference, Linux
https://git.kernel.org/stable/c/fd51e810affa38d735d04261e673b2a5fe9c8665CVE reference, Linux
https://git.kernel.org/stable/c/f66c7904fb6f0e420a654bc90909e64a25d00896CVE reference, Linux
https://git.kernel.org/stable/c/65c484726e74013a2ec7ba67a34d87760ae8f390CVE reference, Linux
https://git.kernel.org/stable/c/29371f3cc83e2a92265b4768014a30b80234112fCVE reference, Linux
https://git.kernel.org/stable/c/e9edf9893cf26d060705c910a9b62d8cc96ed56aCVE reference, Linux
https://git.kernel.org/stable/c/6d3275fc4ed968938e1d556c344798046776668dCVE reference, Linux
https://git.kernel.org/stable/c/52bcb57a4e8a0865a76c587c2451906342ae1b2dCVE reference, Linux
https://cert-portal.siemens.com/productcert/html/ssa-784472.htmlCVE reference, siemens-SADP

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinuxc0cfa2d8a788fcf45df5bf4070ab2474c88d543a, c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, c0cfa2d8a788fcf45df5bf4070ab2474c88d543aunaffected

LinuxLinux5.5, 0, 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.90, 6.18.32, 7.0.9, 7.1affected

Weakness

CWE details

No CWE listed

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