5.5

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.258
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.209
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.175
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.140
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.90
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.32
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.9
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.028
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/65c484726e74013a2ec7ba67a34d87760ae8f390
Patch
https://git.kernel.org/stable/c/29371f3cc83e2a92265b4768014a30b80234112f
Patch
https://git.kernel.org/stable/c/e9edf9893cf26d060705c910a9b62d8cc96ed56a
Patch
https://git.kernel.org/stable/c/6d3275fc4ed968938e1d556c344798046776668d
Patch
https://git.kernel.org/stable/c/52bcb57a4e8a0865a76c587c2451906342ae1b2d
Patch
https://git.kernel.org/stable/c/2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391f
Patch
https://git.kernel.org/stable/c/f66c7904fb6f0e420a654bc90909e64a25d00896
Patch
https://git.kernel.org/stable/c/fd51e810affa38d735d04261e673b2a5fe9c8665
Patch