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CVE-2026-46214
published 2026-05-28

CVE-2026-46214: In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix accept queue count leak on transport mismatch…

high7
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.

Affected

10 ranges
VendorProductVersion rangeFixed in
linuxlinux——
linuxlinux>= c0cfa2d8a788fcf45df5bf4070ab2474c88d543a < 2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391f2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391f
linuxlinux>= c0cfa2d8a788fcf45df5bf4070ab2474c88d543a < fd51e810affa38d735d04261e673b2a5fe9c8665fd51e810affa38d735d04261e673b2a5fe9c8665
linuxlinux>= c0cfa2d8a788fcf45df5bf4070ab2474c88d543a < f66c7904fb6f0e420a654bc90909e64a25d00896f66c7904fb6f0e420a654bc90909e64a25d00896
linuxlinux>= c0cfa2d8a788fcf45df5bf4070ab2474c88d543a < 65c484726e74013a2ec7ba67a34d87760ae8f39065c484726e74013a2ec7ba67a34d87760ae8f390
linuxlinux>= c0cfa2d8a788fcf45df5bf4070ab2474c88d543a < 29371f3cc83e2a92265b4768014a30b80234112f29371f3cc83e2a92265b4768014a30b80234112f
linuxlinux>= c0cfa2d8a788fcf45df5bf4070ab2474c88d543a < e9edf9893cf26d060705c910a9b62d8cc96ed56ae9edf9893cf26d060705c910a9b62d8cc96ed56a
linuxlinux>= c0cfa2d8a788fcf45df5bf4070ab2474c88d543a < 6d3275fc4ed968938e1d556c344798046776668d6d3275fc4ed968938e1d556c344798046776668d
linuxlinux>= c0cfa2d8a788fcf45df5bf4070ab2474c88d543a < 52bcb57a4e8a0865a76c587c2451906342ae1b2d52bcb57a4e8a0865a76c587c2451906342ae1b2d
linuxlinux_kernel——