{"id":"CVE-2026-80932","title":"vsock/virtio: flush works in dependency order","summary":"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.  Th…","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-364"],"vendor":"Linux","product":"Linux","affected":["Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < e059a14c1067bcc4f7b1947cd09f2baab98e340f","Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < 531e2ac2dab1ab90a16427c4f9c86663633e9487","Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < f3313d952fc380cff53db9a28451a8807aa67b43","Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < b9cb4e8ba71c9fbd935d66baa71bbb0b87192c94","Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < 2187a56f2fd1715d54daed6392809223c60544f3","Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < 165a330a68b5f299d8735f0194c314cb2e571269","Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < da5e9f08714c19ba04e6863aca69d40f042f2e04","Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < 728836ebca239810f164262b10211ef59182f811","Linux 4.8"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:21:23.480878Z"},"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:45:16.044Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80932","references":[{"url":"https://git.kernel.org/stable/c/e059a14c1067bcc4f7b1947cd09f2baab98e340f"},{"url":"https://git.kernel.org/stable/c/531e2ac2dab1ab90a16427c4f9c86663633e9487"},{"url":"https://git.kernel.org/stable/c/f3313d952fc380cff53db9a28451a8807aa67b43"},{"url":"https://git.kernel.org/stable/c/b9cb4e8ba71c9fbd935d66baa71bbb0b87192c94"},{"url":"https://git.kernel.org/stable/c/2187a56f2fd1715d54daed6392809223c60544f3"},{"url":"https://git.kernel.org/stable/c/165a330a68b5f299d8735f0194c314cb2e571269"},{"url":"https://git.kernel.org/stable/c/da5e9f08714c19ba04e6863aca69d40f042f2e04"},{"url":"https://git.kernel.org/stable/c/728836ebca239810f164262b10211ef59182f811"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80932.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80932"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532228"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80932"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80932"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80932.mbox"}],"tags":["cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00138,"epssPercentile":0.03138,"scores":{"cna":8.4,"vendor":5.5},"ingestedAt":"2026-09-14T15:23:07.456Z","slug":"CVE-2026-80932","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < e059a14c1067bcc4f7b1947cd09f2baab98e340f`\n- `Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < 531e2ac2dab1ab90a16427c4f9c86663633e9487`\n- `Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < f3313d952fc380cff53db9a28451a8807aa67b43`\n- `Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < b9cb4e8ba71c9fbd935d66baa71bbb0b87192c94`\n- `Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < 2187a56f2fd1715d54daed6392809223c60544f3`\n- `Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < 165a330a68b5f299d8735f0194c314cb2e571269`\n- `Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < da5e9f08714c19ba04e6863aca69d40f042f2e04`\n- `Linux >= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 < 728836ebca239810f164262b10211ef59182f811`\n- `Linux 4.8`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80932.json)","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":223336,"id":"CVE-2026-80932","ts":1792180063182,"field":"cvss","old":"5.5","new":"8.4"},{"seq":223335,"id":"CVE-2026-80932","ts":1792180063182,"field":"severity","old":"medium","new":"high"},{"seq":202769,"id":"CVE-2026-80932","ts":1789403715811,"field":"cvss","old":"8.4","new":"5.5"},{"seq":202768,"id":"CVE-2026-80932","ts":1789403715811,"field":"severity","old":"high","new":"medium"},{"seq":183628,"id":"CVE-2026-80932","ts":1789356676167,"field":"cvss","old":"8.4","new":"6"},{"seq":183627,"id":"CVE-2026-80932","ts":1789356676167,"field":"severity","old":"high","new":"medium"},{"seq":153114,"id":"CVE-2026-80932","ts":1789285349066,"field":"cvss","old":null,"new":"8.4"},{"seq":153113,"id":"CVE-2026-80932","ts":1789285349066,"field":"severity","old":"none","new":"high"},{"seq":147518,"id":"CVE-2026-80932","ts":1789270211221,"field":"cvss","old":null,"new":"6"},{"seq":147517,"id":"CVE-2026-80932","ts":1789270211221,"field":"severity","old":"none","new":"medium"},{"seq":109276,"id":"CVE-2026-80932","ts":1789183731244,"field":"cvss","old":null,"new":"6"},{"seq":109275,"id":"CVE-2026-80932","ts":1789183731244,"field":"severity","old":"none","new":"medium"}]}