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.
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Wed, 10 Jun 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | NVD-CWE-Other | |
| Metrics |
cvssV3_1
|
cvssV3_1
|
Mon, 01 Jun 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Fri, 29 May 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-911 | |
| References |
| |
| Metrics |
threat_severity
|
cvssV3_1
|
Thu, 28 May 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-668 |
Thu, 28 May 2026 10:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | vsock/virtio: fix accept queue count leak on transport mismatch | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
|
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-06-14T18:03:15.809Z
Reserved: 2026-05-13T15:03:33.105Z
Link: CVE-2026-46214
No data.
Status : Analyzed
Published: 2026-05-28T10:16:37.050
Modified: 2026-06-10T19:16:17.400
Link: CVE-2026-46214
OpenCVE Enrichment
Updated: 2026-06-10T20:45:40Z