vsock/virtio: fix accept queue count leak on transport mismatch
Summary
| CVE | CVE-2026-46214 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-28 10:16:37 UTC |
| Updated | 2026-06-01 17:17:32 UTC |
| 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. |
Risk And Classification
EPSS: 0.000180000 probability, percentile 0.050770000 (date 2026-06-01)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391f git | Not specified |
| CNA | Linux | Linux | affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a fd51e810affa38d735d04261e673b2a5fe9c8665 git | Not specified |
| CNA | Linux | Linux | affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a f66c7904fb6f0e420a654bc90909e64a25d00896 git | Not specified |
| CNA | Linux | Linux | affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 65c484726e74013a2ec7ba67a34d87760ae8f390 git | Not specified |
| CNA | Linux | Linux | affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 29371f3cc83e2a92265b4768014a30b80234112f git | Not specified |
| CNA | Linux | Linux | affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a e9edf9893cf26d060705c910a9b62d8cc96ed56a git | Not specified |
| CNA | Linux | Linux | affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 6d3275fc4ed968938e1d556c344798046776668d git | Not specified |
| CNA | Linux | Linux | affected c0cfa2d8a788fcf45df5bf4070ab2474c88d543a 52bcb57a4e8a0865a76c587c2451906342ae1b2d git | Not specified |
| CNA | Linux | Linux | affected 5.5 | Not specified |
| CNA | Linux | Linux | unaffected 5.5 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.140 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.90 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.32 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.9 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/52bcb57a4e8a0865a76c587c2451906342ae1b2d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/65c484726e74013a2ec7ba67a34d87760ae8f390 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f66c7904fb6f0e420a654bc90909e64a25d00896 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6d3275fc4ed968938e1d556c344798046776668d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e9edf9893cf26d060705c910a9b62d8cc96ed56a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/29371f3cc83e2a92265b4768014a30b80234112f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/fd51e810affa38d735d04261e673b2a5fe9c8665 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.