Answer in brief
CVE-2026-46214 records a Unknown severity vulnerability in vsock/virtio: fix accept queue count leak on transport mismatch. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391f || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <fd51e810affa38d735d04261e673b2a5fe9c8665 || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <f66c7904fb6f0e420a654bc90909e64a25d00896 || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <65c484726e74013a2ec7ba67a34d87760ae8f390 || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <29371f3cc83e2a92265b4768014a30b80234112f || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <e9edf9893cf26d060705c910a9b62d8cc96ed56a || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <6d3275fc4ed968938e1d556c344798046776668d || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <52bcb57a4e8a0865a76c587c2451906342ae1b2d | 2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391f, fd51e810affa38d735d04261e673b2a5fe9c8665, f66c7904fb6f0e420a654bc90909e64a25d00896, 65c484726e74013a2ec7ba67a34d87760ae8f390, 29371f3cc83e2a92265b4768014a30b80234112f, e9edf9893cf26d060705c910a9b62d8cc96ed56a, 6d3275fc4ed968938e1d556c344798046776668d, 52bcb57a4e8a0865a76c587c2451906342ae1b2d |
| Linux/Linuxgeneric | 5.5 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.