{"id":"CVE-2026-80932","revision":"6c85e4c0190143828869d82d3e2a0c30","records":[{"revision":"6c85e4c0190143828869d82d3e2a0c30","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80932","aliases":[],"title":"vsock/virtio: flush works in dependency order","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.","state":0,"publishedAt":"2026-09-11T19:42:07.012+00:00","modifiedAt":"2026-10-19T08:45:16.044+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/vmw_vsock/virtio_transport.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872\",\n                            \"lessThan\": \"e059a14c1067bcc4f7b1947cd09f2baab98e340f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872\",\n                            \"lessThan\": \"531e2ac2dab1ab90a16427c4f9c86663633e9487\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872\",\n                            \"lessThan\": \"f3313d952fc380cff53db9a28451a8807aa67b43\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872\",\n                            \"lessThan\": \"b9cb4e8ba71c9fbd935d66baa71bbb0b87192c94\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872\",\n                            \"lessThan\": \"2187a56f2fd1715d54daed6392809223c60544f3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872\",\n                            \"lessThan\": \"165a330a68b5f299d8735f0194c314cb2e571269\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872\",\n                            \"lessThan\": \"da5e9f08714c19ba04e6863aca69d40f042f2e04\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872\",\n                            \"lessThan\": \"728836ebca239810f164262b10211ef59182f811\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/vmw_vsock/virtio_transport.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 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,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/e059a14c1067bcc4f7b1947cd09f2baab98e340f","https://git.kernel.org/stable/c/531e2ac2dab1ab90a16427c4f9c86663633e9487","https://git.kernel.org/stable/c/f3313d952fc380cff53db9a28451a8807aa67b43","https://git.kernel.org/stable/c/b9cb4e8ba71c9fbd935d66baa71bbb0b87192c94","https://git.kernel.org/stable/c/2187a56f2fd1715d54daed6392809223c60544f3","https://git.kernel.org/stable/c/165a330a68b5f299d8735f0194c314cb2e571269","https://git.kernel.org/stable/c/da5e9f08714c19ba04e6863aca69d40f042f2e04","https://git.kernel.org/stable/c/728836ebca239810f164262b10211ef59182f811"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80932","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80932","identifiers":["CVE-2026-80932"]},"retained":false,"historicalAffected":[]}],"coverage":[]}