298 lines
16 KiB
JSON
298 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-74613",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-15T05:44:03.920Z",
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"datePublished": "2026-08-22T15:31:59.062Z",
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"dateUpdated": "2026-10-16T19:06:01.547Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-25T05:40:39.724Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The bug is in the virtio-vsock guest driver reached via AF_VSOCK sockets and virtio virtqueue callbacks, not via remote network packets; kernel guidance classifies vsock as Local attack vector.\nAC:L - An attacker can reliably queue virtio_transport_rx_work by maintaining active vsock traffic while virtqueues are torn down; this slab UAF race is attacker-influenced and does not depend on uncontrollable memory layout.\nPR:L - Triggering the vulnerable RX refill path requires only normal unprivileged AF_VSOCK use to drive virtio RX work; teardown can coincide with host-driven suspend, migration, or device removal without guest root.\nUI:N - Exploitation requires no victim interaction beyond the attacker opening and using vsock sockets to generate virtio RX work during device teardown.\nS:U - The use-after-free corrupts guest-kernel virtio state and can panic the guest kernel; it does not directly cross a VM/host security boundary or enable guest-to-host escape.\nC:H - KASAN reports a slab use-after-free read in virtqueue_add_sgs on freed virtqueue metadata; UAF of kernel heap objects can be leveraged for arbitrary kernel memory disclosure.\nI:H - Use-after-free of virtqueue structures during virtio_vsock_rx_fill enables heap corruption and can be developed into arbitrary kernel writes or control-flow hijack, not merely a benign read.\nA:H - The reported reproducer triggers KASAN slab-use-after-free and kernel panic during virtio_vsock freeze/teardown; UAF in kernel workqueue context causes high availability impact."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/vmw_vsock/virtio_transport.c"
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],
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"versions": [
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{
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"version": "b917507e5ad983085d29069369778b16aa03a0a8",
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"lessThan": "a7658508f5fe8f1077a65e8cb9535d3426f37a2f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b917507e5ad983085d29069369778b16aa03a0a8",
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"lessThan": "1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b917507e5ad983085d29069369778b16aa03a0a8",
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"lessThan": "4d37e3525cc346a1421c1bdeaad5848e249fc60c",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b917507e5ad983085d29069369778b16aa03a0a8",
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"lessThan": "9d80a04129a6c27a690cb69de3fe3f50be5aa8b9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b917507e5ad983085d29069369778b16aa03a0a8",
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"lessThan": "a309b74e3fc052352ab778500449cb9c3853c363",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b917507e5ad983085d29069369778b16aa03a0a8",
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"lessThan": "38c7763fdc533edb34dc8f4489c260e8ba2ccae9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b917507e5ad983085d29069369778b16aa03a0a8",
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"lessThan": "e82a5faea2e3886dfb2a65ce092a132e7e896915",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b917507e5ad983085d29069369778b16aa03a0a8",
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"lessThan": "a31e0ad444698d8aa7534a0f89fda543730f97a5",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/vmw_vsock/virtio_transport.c"
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],
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"versions": [
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{
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"version": "5.3",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.3",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.265",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.216",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.183",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.152",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.104",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.45",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.9",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "5.10.265"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "5.15.216"
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "6.1.183"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "6.6.152"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "6.12.104"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "6.18.45"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "7.1.9"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a7658508f5fe8f1077a65e8cb9535d3426f37a2f"
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},
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{
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"url": "https://git.kernel.org/stable/c/1aa21e7c8702a7c37cd7d3cace1a652cfa5e8171"
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},
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{
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"url": "https://git.kernel.org/stable/c/4d37e3525cc346a1421c1bdeaad5848e249fc60c"
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},
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{
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"url": "https://git.kernel.org/stable/c/9d80a04129a6c27a690cb69de3fe3f50be5aa8b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/a309b74e3fc052352ab778500449cb9c3853c363"
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},
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{
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"url": "https://git.kernel.org/stable/c/38c7763fdc533edb34dc8f4489c260e8ba2ccae9"
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},
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{
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"url": "https://git.kernel.org/stable/c/e82a5faea2e3886dfb2a65ce092a132e7e896915"
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},
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{
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"url": "https://git.kernel.org/stable/c/a31e0ad444698d8aa7534a0f89fda543730f97a5"
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}
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],
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"title": "vsock/virtio: avoid refilling the RX queue after teardown",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-74613",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T19:02:24.893418Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-16T19:06:01.547Z"
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}
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}
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]
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}
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} |