{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80932", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.802Z", "datePublished": "2026-09-11T19:42:07.012Z", "dateUpdated": "2026-09-11T19:42:07.012Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:42:07.012Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/vmw_vsock/virtio_transport.c"], "versions": [{"version": "0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872", "lessThan": "2187a56f2fd1715d54daed6392809223c60544f3", "status": "affected", "versionType": "git"}, {"version": "0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872", "lessThan": "165a330a68b5f299d8735f0194c314cb2e571269", "status": "affected", "versionType": "git"}, {"version": "0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872", "lessThan": "da5e9f08714c19ba04e6863aca69d40f042f2e04", "status": "affected", "versionType": "git"}, {"version": "0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872", "lessThan": "728836ebca239810f164262b10211ef59182f811", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/vmw_vsock/virtio_transport.c"], "versions": [{"version": "4.8", "status": "affected"}, {"version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"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"}], "title": "vsock/virtio: flush works in dependency order", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/vmw_vsock/virtio_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2187a56f2fd1715d54daed6392809223c60544f3", "status": "affected", "version": "0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872", "versionType": "git"}, {"lessThan": "165a330a68b5f299d8735f0194c314cb2e571269", "status": "affected", "version": "0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872", "versionType": "git"}, {"lessThan": "da5e9f08714c19ba04e6863aca69d40f042f2e04", "status": "affected", "version": "0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872", "versionType": "git"}, {"lessThan": "728836ebca239810f164262b10211ef59182f811", "status": "affected", "version": "0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/vmw_vsock/virtio_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.8"}, {"lessThan": "4.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-80932", "lastModified": "2026-09-11T20:18:57.023", "metrics": {}, "published": "2026-09-11T20:18:57.023", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/165a330a68b5f299d8735f0194c314cb2e571269"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2187a56f2fd1715d54daed6392809223c60544f3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/728836ebca239810f164262b10211ef59182f811"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/da5e9f08714c19ba04e6863aca69d40f042f2e04"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel (vsock/virtio): Use-after-free vulnerability due to incorrect work item flushing", "id": "2532228", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532228"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:H", "status": "draft"}, "cwe": "CWE-364", "details": ["A flaw was found in the Linux kernel, specifically within the `vsock/virtio` component. An incorrect order of flushing work items during the removal of a `virtio_vsock` object can lead to a use-after-free condition. This vulnerability allows a race condition where memory can be freed while still in use, potentially resulting in memory corruption and system instability or a denial of service."], "name": "CVE-2026-80932", "public_date": "2026-09-11T19:42:07Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80932\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80932\nhttps://git.kernel.org/stable/c/165a330a68b5f299d8735f0194c314cb2e571269\nhttps://git.kernel.org/stable/c/2187a56f2fd1715d54daed6392809223c60544f3\nhttps://git.kernel.org/stable/c/728836ebca239810f164262b10211ef59182f811\nhttps://git.kernel.org/stable/c/da5e9f08714c19ba04e6863aca69d40f042f2e04"], "threat_severity": "Moderate"}

{}