310 lines
16 KiB
JSON
310 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-2026-64547",
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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": "2026-07-19T15:36:31.795Z",
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"datePublished": "2026-07-27T20:10:37.786Z",
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"dateUpdated": "2026-10-19T20:48:40.168Z"
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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": "2026-08-17T04:57:24.361Z"
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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\nnet: usb: net1080: validate packet_len before pad-byte access in rx_fixup\n\nFor an even packet_len, net1080_rx_fixup() reads the pad byte at\nskb->data[packet_len] before the skb->len != packet_len check further\ndown, and packet_len is only bounded against NC_MAX_PACKET. A malicious\nNetChip 1080 device can send a short frame advertising a large even\npacket_len (e.g. 0x4000), so the pad-byte read lands past the end of the\nskb:\n\n BUG: KASAN: slab-out-of-bounds in net1080_rx_fixup\n Read of size 1 at addr ffff8880106c83c6 by task ksoftirqd/0/14\n ...\n net1080_rx_fixup (drivers/net/usb/net1080.c:384)\n usbnet_bh (drivers/net/usb/usbnet.c:1589)\n process_one_work (kernel/workqueue.c:3322)\n bh_worker (kernel/workqueue.c:3708)\n tasklet_action (kernel/softirq.c:965)\n handle_softirqs (kernel/softirq.c:622)\n ...\n\nReject the frame when packet_len >= skb->len before reading."
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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:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 8.1,
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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:A - net1080 implements a point-to-point Ethernet link over a USB host-to-host cable, so the malformed NC frame originates from the logically adjacent peer host/device on that link rather than from a local user; a compromised peer (or a gadget-mode board presenting 0525:1080, which autoloads the default-y driver) sends the frame over an already-established link with no physical interaction at attack time.\nAC:L - The attacker fully and deterministically controls packet_len and the frame length in every received frame, so the out-of-bounds read is triggered on demand with no race, no timing dependency, and no reliance on memory layout the attacker cannot influence.\nPR:N - The rx path runs in softirq/workqueue context on every received URB with no authentication, no capability check, and no local account on the target; USB/link-level peers are entirely untrusted and ungated.\nUI:N - The driver binds automatically via MODULE_DEVICE_TABLE and processes frames in usbnet_bh without any user action; on an already-connected host-to-host cable the victim does nothing at all.\nS:U - The out-of-bounds read stays within the kernel's own memory and security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The attacker controls the read offset across a ~32 KB range past a 1523-byte slab/page-frag object, and the comparison outcome is leaked back over the wire because only the matching path reaches nc_ensure_sync()'s vendor control transfer, yielding a repeatable oracle for probing kernel heap contents rather than a bounded few-byte read.\nI:N - The path performs only a one-byte read; the subsequent skb->len != packet_len check still rejects the frame, and the skb_trim calls on the underflow paths are no-ops, so no kernel memory or network data is modified.\nA:H - The read reaches roughly 31 KB beyond the allocation, which can cross into a KFENCE guard page, an unmapped hole, or a page-frag boundary and oops in softirq context, and on KASAN/panic_on_warn hardened kernels it panics the machine outright — repeatable per frame."
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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/usb/net1080.c"
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],
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"versions": [
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{
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"version": "904813cd8a0b334189da285bb05af0b18b062502",
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"lessThan": "f42217fa7d535e9ec4151f7971f06f6ea65e850a",
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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": "904813cd8a0b334189da285bb05af0b18b062502",
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"lessThan": "c087749815379e9af2fdbeb08bfc33870b103958",
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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": "904813cd8a0b334189da285bb05af0b18b062502",
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"lessThan": "e4a87126c085b097d29e17e3b7647295bba8be7c",
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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": "904813cd8a0b334189da285bb05af0b18b062502",
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"lessThan": "685e92934f11d5e215dad58813e2f9955ac2f436",
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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": "904813cd8a0b334189da285bb05af0b18b062502",
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"lessThan": "4dc8484be3302d187274364820d3bef6c62bde32",
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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": "904813cd8a0b334189da285bb05af0b18b062502",
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"lessThan": "b153cfe84b1340c69a13d0957665a2bfcf21239c",
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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": "904813cd8a0b334189da285bb05af0b18b062502",
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"lessThan": "ea866cab12db1a2100b400a8b03569e5bc0ee29a",
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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": "904813cd8a0b334189da285bb05af0b18b062502",
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"lessThan": "03f384bc0cb8d4a1301d4f5b0baef2d980258383",
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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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"drivers/net/usb/net1080.c"
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],
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"versions": [
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{
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"version": "2.6.14",
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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": "2.6.14",
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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": "5.10.261",
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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": "5.15.212",
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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": "6.1.178",
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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": "6.6.145",
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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": "6.12.97",
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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": "6.18.40",
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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": "7.1.5",
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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": "2.6.14",
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"versionEndExcluding": "5.10.261"
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.14",
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"versionEndExcluding": "6.12.97"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.14",
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"versionEndExcluding": "7.1.5"
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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/f42217fa7d535e9ec4151f7971f06f6ea65e850a"
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},
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{
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"url": "https://git.kernel.org/stable/c/c087749815379e9af2fdbeb08bfc33870b103958"
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},
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{
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"url": "https://git.kernel.org/stable/c/e4a87126c085b097d29e17e3b7647295bba8be7c"
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},
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{
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"url": "https://git.kernel.org/stable/c/685e92934f11d5e215dad58813e2f9955ac2f436"
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},
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{
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"url": "https://git.kernel.org/stable/c/4dc8484be3302d187274364820d3bef6c62bde32"
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},
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{
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"url": "https://git.kernel.org/stable/c/b153cfe84b1340c69a13d0957665a2bfcf21239c"
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},
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{
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"url": "https://git.kernel.org/stable/c/ea866cab12db1a2100b400a8b03569e5bc0ee29a"
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},
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{
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"url": "https://git.kernel.org/stable/c/03f384bc0cb8d4a1301d4f5b0baef2d980258383"
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}
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],
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"title": "net: usb: net1080: validate packet_len before pad-byte access in rx_fixup",
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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-2026-64547",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:42:20.565927Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-125",
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"description": "CWE-125 Out-of-bounds Read"
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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": "2026-10-19T20:48:40.168Z"
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}
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}
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]
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}
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} |