298 lines
15 KiB
JSON
298 lines
15 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-2022-50200",
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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": "2025-06-18T10:57:27.428Z",
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"datePublished": "2025-06-18T11:03:42.627Z",
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"dateUpdated": "2026-10-15T21:31:18.858Z"
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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": "2026-08-05T08:57:40.701Z"
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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\nselinux: Add boundary check in put_entry()\n\nJust like next_entry(), boundary check is necessary to prevent memory\nout-of-bound access."
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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 reached by opening/reading `/sys/fs/selinux/policy` (selinuxfs), which invokes `sel_open_policy` → `security_read_policy` → `policydb_write` → `put_entry`; this is a local syscall/file path, not network-facing.\nAC:L - A local attacker who can open the policy file reliably drives the vulnerable `put_entry` serialize path; no race or other condition outside the attacker's control is required once that access is available.\nPR:L - Access is gated only by SELinux `SECURITY__READ_POLICY` (file mode is world-readable); common deployments grant this to unconfined local users (e.g. Fedora/RHEL `selinux_unconfined_type`), and globally permissive mode also allows any local user.\nUI:N - Exploitation requires no victim action; the attacker opens the selinuxfs policy node themselves.\nS:U - Impact is kernel memory corruption and privilege escalation within the same host security authority; this is not a VM/IOMMU/sandbox boundary escape.\nC:H - Missing bounds check yields an out-of-bounds write into the vmalloc policy buffer (and `fp->len` underflow enables further corruption), which can be leveraged for arbitrary kernel memory disclosure primitives.\nI:H - `put_entry` performs `memcpy` into `fp->data` without verifying remaining length, so a serialize overrun is a kernel out-of-bounds write usable for integrity compromise and control-flow hijacking.\nA:H - The same out-of-bounds write / length underflow can oops or panic the kernel, so availability impact is high."
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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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"security/selinux/ss/policydb.h"
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],
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"versions": [
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{
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"status": "affected",
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{
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"lessThan": "477722f31ad73aa779154d1d7e00825538389f76",
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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": "cee74f47a6baba0ac457e87687fdcf0abd599f0a",
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"lessThan": "90bdf50ae70c5571a277b5601e4f5df210831e0a",
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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": "cee74f47a6baba0ac457e87687fdcf0abd599f0a",
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"lessThan": "adbfdaacde18faf6cd4e490764045375266b3fbd",
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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": "cee74f47a6baba0ac457e87687fdcf0abd599f0a",
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"lessThan": "7363a69d8ca8f0086f8e1196c8ddaf0e168614b1",
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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": "cee74f47a6baba0ac457e87687fdcf0abd599f0a",
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"lessThan": "9605f50157cae00eb299e1189a6d708c84935ad8",
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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": "cee74f47a6baba0ac457e87687fdcf0abd599f0a",
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"lessThan": "dedd558d9765b72c66e5a53948e9f5abc3ece1f6",
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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": "cee74f47a6baba0ac457e87687fdcf0abd599f0a",
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"lessThan": "15ec76fb29be31df2bccb30fc09875274cba2776",
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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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"security/selinux/ss/policydb.h"
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],
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"versions": [
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{
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"version": "2.6.37",
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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": "2.6.37",
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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": "4.14.291",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.256",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.211",
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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": "5.10.137",
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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": "5.15.61",
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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": "5.18.18",
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"lessThanOrEqual": "5.18.*",
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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": "5.19.2",
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"lessThanOrEqual": "5.19.*",
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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": "6.0",
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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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{
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.37",
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"versionEndExcluding": "4.14.291"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "4.19.256"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "5.4.211"
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"versionEndExcluding": "5.10.137"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/2dabe6a872a5744865372eb30ea51e8ccd21305a"
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},
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{
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"url": "https://git.kernel.org/stable/c/477722f31ad73aa779154d1d7e00825538389f76"
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},
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{
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"url": "https://git.kernel.org/stable/c/90bdf50ae70c5571a277b5601e4f5df210831e0a"
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},
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{
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"url": "https://git.kernel.org/stable/c/adbfdaacde18faf6cd4e490764045375266b3fbd"
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},
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{
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"url": "https://git.kernel.org/stable/c/7363a69d8ca8f0086f8e1196c8ddaf0e168614b1"
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},
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{
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"url": "https://git.kernel.org/stable/c/9605f50157cae00eb299e1189a6d708c84935ad8"
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},
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{
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"url": "https://git.kernel.org/stable/c/dedd558d9765b72c66e5a53948e9f5abc3ece1f6"
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},
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{
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"url": "https://git.kernel.org/stable/c/15ec76fb29be31df2bccb30fc09875274cba2776"
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}
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],
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"title": "selinux: Add boundary check in put_entry()",
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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-2022-50200",
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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": "2026-10-15T21:30:24.892364Z"
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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": "2026-10-15T21:31:18.858Z"
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}
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}
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]
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}
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} |