{"id":"CVE-2026-74613","revision":"2aaafb28defb42d9a9908460661c590a","records":[{"revision":"2aaafb28defb42d9a9908460661c590a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74613","aliases":[],"title":"vsock/virtio: avoid refilling the RX queue after teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: avoid refilling the RX queue after teardown\n\nCommit b917507e5ad9 (\"vsock/virtio: stop workers during the .remove()\")\nmade the RX worker jump to its common exit when rx_run is clear.  That\nexit still refills the RX queue when the buffer count is low, so work\nqueued across virtio_vsock_vqs_del() can add buffers after the virtqueues\nhave been deleted.\n\nBUG: KASAN: slab-use-after-free in virtqueue_add_sgs\nRead of size 4 by task kworker/0:1\nWorkqueue: virtio_vsock virtio_transport_rx_work\nCall Trace:\n virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2796)\n virtio_vsock_rx_fill (net/vmw_vsock/virtio_transport.c:332)\n virtio_transport_rx_work (net/vmw_vsock/virtio_transport.c:701)\n process_one_work (kernel/workqueue.c:3314)\n worker_thread (kernel/workqueue.c:3478)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:158)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n...\nFreed by task 141:\n kfree (mm/slub.c:6566)\n vp_del_vq (drivers/virtio/virtio_pci_common.c:259)\n vp_del_vqs (drivers/virtio/virtio_pci_common.c:285)\n virtio_vsock_freeze (net/vmw_vsock/virtio_transport.c:912)\n virtio_device_freeze (drivers/virtio/virtio.c:658)\n virtio_pci_freeze (drivers/virtio/virtio_pci_common.c:601)\n pci_pm_freeze (drivers/pci/pci-driver.c:1098)\n device_suspend (drivers/base/power/main.c:1968)\nKernel panic - not syncing: KASAN: panic_on_warn set ...\n\nJump to a no-refill exit when rx_run is clear, leaving the normal exit\nto replenish a running queue.","state":0,"publishedAt":"2026-08-22T15:31:59.062+00:00","modifiedAt":"2026-10-16T19:06:01.547+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\": \"b917507e5ad983085d29069369778b16aa03a0a8\",\n                            \"lessThan\": \"a7658508f5fe8f1077a65e8cb9535d3426f37a2f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b917507e5ad983085d29069369778b16aa03a0a8\",\n                            \"lessThan\": \"1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b917507e5ad983085d29069369778b16aa03a0a8\",\n                            \"lessThan\": \"4d37e3525cc346a1421c1bdeaad5848e249fc60c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b917507e5ad983085d29069369778b16aa03a0a8\",\n                            \"lessThan\": \"9d80a04129a6c27a690cb69de3fe3f50be5aa8b9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b917507e5ad983085d29069369778b16aa03a0a8\",\n                            \"lessThan\": \"a309b74e3fc052352ab778500449cb9c3853c363\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b917507e5ad983085d29069369778b16aa03a0a8\",\n                            \"lessThan\": \"38c7763fdc533edb34dc8f4489c260e8ba2ccae9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b917507e5ad983085d29069369778b16aa03a0a8\",\n                            \"lessThan\": \"e82a5faea2e3886dfb2a65ce092a132e7e896915\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b917507e5ad983085d29069369778b16aa03a0a8\",\n                            \"lessThan\": \"a31e0ad444698d8aa7534a0f89fda543730f97a5\",\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\": \"5.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.152\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.104\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.45\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.9\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\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:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/a7658508f5fe8f1077a65e8cb9535d3426f37a2f","https://git.kernel.org/stable/c/1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171","https://git.kernel.org/stable/c/4d37e3525cc346a1421c1bdeaad5848e249fc60c","https://git.kernel.org/stable/c/9d80a04129a6c27a690cb69de3fe3f50be5aa8b9","https://git.kernel.org/stable/c/a309b74e3fc052352ab778500449cb9c3853c363","https://git.kernel.org/stable/c/38c7763fdc533edb34dc8f4489c260e8ba2ccae9","https://git.kernel.org/stable/c/e82a5faea2e3886dfb2a65ce092a132e7e896915","https://git.kernel.org/stable/c/a31e0ad444698d8aa7534a0f89fda543730f97a5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74613","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74613","identifiers":["CVE-2026-74613"]},"retained":false,"historicalAffected":[]}],"coverage":[]}