318 lines
17 KiB
JSON
318 lines
17 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-2025-39969",
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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": "2025-04-16T07:20:57.149Z",
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"datePublished": "2025-10-15T07:55:52.948Z",
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"dateUpdated": "2026-10-15T22:02:34.578Z"
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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": "2026-08-05T12:06:38.466Z"
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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\ni40e: fix validation of VF state in get resources\n\nVF state I40E_VF_STATE_ACTIVE is not the only state in which\nVF is actually active so it should not be used to determine\nif a VF is allowed to obtain resources.\n\nUse I40E_VF_STATE_RESOURCES_LOADED that is set only in\ni40e_vc_get_vf_resources_msg() and cleared during reset."
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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:C/C:H/I:H/A:H",
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"baseScore": 8.8,
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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 attack is delivered over the i40e SR-IOV virtchnl mailbox by a VF the attacker already controls (guest VM with VF passthrough, or a VFIO-owning container), not over any network protocol. This is local access from the attacking context into the host PF driver.\nAC:L - `VIRTCHNL_OP_GET_VF_RESOURCES` is accepted unconditionally whenever `I40E_VF_STATE_INIT` is set, so the VF can replay it deterministically at any time with no grooming; the deterministic damage (filter teardown, `driver_caps`/`RDMAENA` reset, spurious `ACTIVE`) needs no race at all, and the freed-VSI window is widened by the handler's own `GFP_KERNEL` sleep, which the attacker can hammer at will.\nPR:L - The attacker only needs the ability to drive the VF's admin queue — kernel/root inside the assigned guest or possession of the VFIO device — which is a low-privileged position with respect to the host PF driver under attack. No host-side privileges are required.\nUI:N - The malicious VF sends the virtchnl messages entirely on its own initiative. No host administrator or other user action is needed at any point.\nS:C - The attacker executes in a guest VM (or VF-assigned container) while the corrupted state, the freed-VSI accesses, and the MAC-filter/MMIO programming all occur in the host PF driver's security authority. Impact reaches the hypervisor and other VFs/guests sharing the adapter, crossing the guest/host boundary.\nC:H - The unserialized handler reads `vsi->info.pvid`, `vsi->alloc_queue_pairs` and `vsi->info.qs_handle[0]` from a VSI that `i40e_free_vf_res()` may have already released and echoes those values back to the guest in the `virtchnl_vf_resource` reply, turning a use-after-free read into a direct host-memory disclosure channel. The VF can also read back state belonging to the PF's main VSI when `lan_vsi_idx` has been zeroed.\nI:H - The same path performs `spin_lock_bh(&vsi->mac_filter_hash_lock)` and `i40e_del_mac_filter()` — lock and hash-list writes — on freed memory, a classic UAF write primitive, and can be aimed at `pf->vsi[0]` (the host's main VSI) to delete the host's own L2 filters. Re-toggling `I40E_VF_STATE_RDMAENA` additionally re-opens `i40e_config_rdma_qvlist()`, which programs `I40E_VPINT_CEQCTL` from an unvalidated VF-supplied index.\nA:H - Dereferencing a released `struct i40e_vsi` and taking a spinlock inside freed memory will oops or panic the host kernel, and tearing down a live VF's MAC filters plus corrupting the PF's ACTIVE/RDMA state wedges networking for that VF and the adapter. A host panic takes down the hypervisor and every guest on it, and the VF can retrigger the condition indefinitely."
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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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"drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c",
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"drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h"
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],
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"versions": [
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{
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"version": "171527da84149c2c7aa6a60a64b09d24f3546298",
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"lessThan": "185745d56ec958bf8aa773828213237dfcc32f5a",
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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": "eb87117c27e729b0aeef4d72ed40d6a1761b0f68",
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"lessThan": "f47876788a23de296c42ef9d505b5c1630f0b4b8",
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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": "2132643b956f553f5abddc9bae20dae267b082e0",
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"lessThan": "8e35c80f8570426fe0f0cc92b151ebd835975f22",
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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": "61125b8be85dfbc7e9c7fe1cc6c6d631ab603516",
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"lessThan": "6c3981fd59ef11a75005ac9978f034da5a168b6a",
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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": "61125b8be85dfbc7e9c7fe1cc6c6d631ab603516",
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"lessThan": "e748f1ee493f88e38b77363a60499f979d42c58a",
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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": "61125b8be85dfbc7e9c7fe1cc6c6d631ab603516",
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"lessThan": "6128bbc7adc25c87c2f64b5eb66a280b78ef7ab7",
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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": "61125b8be85dfbc7e9c7fe1cc6c6d631ab603516",
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"lessThan": "a991dc56d3e9a2c3db87d0c3f03c24f6595400f1",
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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": "61125b8be85dfbc7e9c7fe1cc6c6d631ab603516",
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"lessThan": "877b7e6ffc23766448236e8732254534c518ba42",
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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": "5.4.165",
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"lessThan": "5.4.300",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.10.85",
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"lessThan": "5.10.245",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.15.8",
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"lessThan": "5.15.194",
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"status": "affected",
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"versionType": "semver"
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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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"drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c",
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"drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h"
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],
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"versions": [
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{
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"version": "5.16",
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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": "5.16",
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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": "5.4.300",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.245",
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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": "5.15.194",
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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": "6.1.155",
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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": "6.6.109",
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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": "6.12.50",
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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": "6.16.10",
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"lessThanOrEqual": "6.16.*",
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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": "6.17",
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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": "5.4.165",
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"versionEndExcluding": "5.4.300"
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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/185745d56ec958bf8aa773828213237dfcc32f5a"
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},
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{
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"url": "https://git.kernel.org/stable/c/f47876788a23de296c42ef9d505b5c1630f0b4b8"
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},
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{
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"url": "https://git.kernel.org/stable/c/8e35c80f8570426fe0f0cc92b151ebd835975f22"
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},
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{
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"url": "https://git.kernel.org/stable/c/6c3981fd59ef11a75005ac9978f034da5a168b6a"
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},
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{
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"url": "https://git.kernel.org/stable/c/e748f1ee493f88e38b77363a60499f979d42c58a"
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},
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{
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"url": "https://git.kernel.org/stable/c/6128bbc7adc25c87c2f64b5eb66a280b78ef7ab7"
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},
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{
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"url": "https://git.kernel.org/stable/c/a991dc56d3e9a2c3db87d0c3f03c24f6595400f1"
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},
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{
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"url": "https://git.kernel.org/stable/c/877b7e6ffc23766448236e8732254534c518ba42"
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}
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],
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"title": "i40e: fix validation of VF state in get resources",
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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-2025-39969",
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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": "2026-10-15T21:55:24.332500Z"
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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": "2026-10-15T22:02:34.578Z"
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}
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}
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]
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}
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} |