226 lines
11 KiB
JSON
226 lines
11 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-2026-31401",
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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": "2026-03-09T15:48:24.086Z",
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"datePublished": "2026-04-03T15:16:04.903Z",
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"dateUpdated": "2026-10-19T18:35:46.408Z"
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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": "2026-08-05T12:22:09.102Z"
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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\nHID: bpf: prevent buffer overflow in hid_hw_request\n\nright now the returned value is considered to be always valid. However,\nwhen playing with HID-BPF, the return value can be arbitrary big,\nbecause it's the return value of dispatch_hid_bpf_raw_requests(), which\ncalls the struct_ops and we have no guarantees that the value makes\nsense."
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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 vulnerable `memcpy()` is reached through local `bpf()` operations that load/attach HID-BPF `struct_ops` programs and run a HID-BPF syscall program; it is not reachable directly from remote packets or unauthenticated HID traffic alone.\nAC:L - An attacker who can load the needed HID-BPF programs controls the oversized `hid_hw_request` callback return value and can invoke `hid_bpf_hw_request()` directly, with no race or external timing condition.\nPR:L - Loading HID-BPF requires BPF privileges such as CAP_BPF/CAP_PERFMON, but these can be delegated through BPF tokens into non-init user namespaces in plausible containerized deployments. Choosing the higher-severity option, this is treated as low rather than high privileges.\nUI:N - No victim interaction is required after the attacker has local BPF access; the attacker can attach the callback and run the syscall BPF program themselves.\nS:U - The corruption occurs within the kernel security authority and represents a standard local kernel compromise path, not a VM escape or other cross-scope boundary.\nC:H - The unchecked return value causes an out-of-bounds read from the `dma_data` kernel heap buffer into BPF-accessible memory, allowing disclosure of adjacent kernel memory. As memory corruption, it is also potentially usable to build stronger read primitives.\nI:H - The same unchecked return value is used as the length for `memcpy()` into the caller-provided BPF memory buffer, producing an out-of-bounds kernel write. Such kernel memory corruption is defensibly capable of arbitrary modification or control-flow compromise.\nA:H - A large attacker-controlled copy length can corrupt kernel memory or fault during the copy, causing an oops, panic, or system crash."
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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/hid/bpf/hid_bpf_dispatch.c"
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],
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"versions": [
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{
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"version": "8bd0488b5ea58655ad6fdcbe0408ef49b16882b1",
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"lessThan": "d6efaa50af62fb0790dd1fd4e7e5506b46312510",
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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": "8bd0488b5ea58655ad6fdcbe0408ef49b16882b1",
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"lessThan": "73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1",
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"status": "affected",
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},
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{
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"lessThan": "eb57dae20fdf6f3069cdc07821fa3bb46de381d7",
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"status": "affected",
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"lessThan": "2b658c1c442ec1cd9eec5ead98d68662c40fe645",
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"status": "affected",
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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/hid/bpf/hid_bpf_dispatch.c"
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],
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"versions": [
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{
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"version": "6.11",
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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": "6.11",
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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": "6.12.78",
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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": "6.18.20",
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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": "6.19.10",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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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"nodes": [
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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": "6.11",
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"versionEndExcluding": "6.12.78"
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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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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.11",
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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/d6efaa50af62fb0790dd1fd4e7e5506b46312510"
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},
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{
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"url": "https://git.kernel.org/stable/c/73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1"
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},
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{
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"url": "https://git.kernel.org/stable/c/eb57dae20fdf6f3069cdc07821fa3bb46de381d7"
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},
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{
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"url": "https://git.kernel.org/stable/c/2b658c1c442ec1cd9eec5ead98d68662c40fe645"
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}
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],
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"title": "HID: bpf: prevent buffer overflow in hid_hw_request",
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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-2026-31401",
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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": "2026-10-16T15:08:47.196552Z"
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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-120",
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"description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"
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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": "2026-10-19T18:35:46.408Z"
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}
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}
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]
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}
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} |