{"cve":"CVE-2026-80932","nvd":{"published":"2026-09-11T20:18:57.023","modified":"2026-10-19T09:17:24.287","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: flush works in dependency order\n\nvirtio_vsock_remove() stops the virtqueues and then flushes each work\nitem before freeing the enclosing virtio_vsock.  The current order does\nnot account for dependencies between those items: tx_work may queue\nsend_pkt_work, and send_pkt_work may queue rx_work.\n\nIn particular, send_pkt_work can set restart_rx and release tx_lock.\nThe remove path can then stop the queues and flush rx_work before\nsend_pkt_work queues it.  Although the later send_pkt_work flush waits\nfor that producer to finish, nothing waits for the newly queued rx_work,\nso kfree(vsock) can race with it.\n\nKASAN reported:\n\n  BUG: KASAN: slab-use-after-free in\n  virtio_transport_rx_work+0x487/0x4b0\n  Read of size 8 at addr ffff888114c2b008 by task kworker/1:1/47\n  Workqueue: virtio_vsock virtio_transport_rx_work\n  Call Trace:\n   virtio_transport_rx_work+0x487/0x4b0\n   process_one_work+0x688/0x1120\n   worker_thread+0x45b/0xd10\n  Allocated by task 1:\n   virtio_vsock_probe+0xef/0x6b0\n  Freed by task 84:\n   kfree+0x131/0x3c0\n   virtio_vsock_remove+0xd1/0x100\n\nFlush the works in producer-to-consumer order.  virtio_vsock_vqs_del()\nhas already disabled the queue callbacks and cleared the run flags, so\nafter tx_work and send_pkt_work are drained, no source remains that can\nqueue rx_work after its flush.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4},"cwes":[],"references":["https://git.kernel.org/stable/c/165a330a68b5f299d8735f0194c314cb2e571269","https://git.kernel.org/stable/c/2187a56f2fd1715d54daed6392809223c60544f3","https://git.kernel.org/stable/c/531e2ac2dab1ab90a16427c4f9c86663633e9487","https://git.kernel.org/stable/c/728836ebca239810f164262b10211ef59182f811","https://git.kernel.org/stable/c/b9cb4e8ba71c9fbd935d66baa71bbb0b87192c94"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-80932","score":0.00138,"percentile":0.03133,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}