303 lines
14 KiB
JSON
303 lines
14 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-2026-31590",
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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": "2026-03-09T15:48:24.120Z",
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"datePublished": "2026-04-24T14:42:17.629Z",
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"dateUpdated": "2026-11-06T15:32:18.788Z"
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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": "2026-06-14T17:42:30.901Z"
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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\nKVM: SEV: Drop WARN on large size for KVM_MEMORY_ENCRYPT_REG_REGION\n\nDrop the WARN in sev_pin_memory() on npages overflowing an int, as the\nWARN is comically trivially to trigger from userspace, e.g. by doing:\n\n struct kvm_enc_region range = {\n .addr = 0,\n .size = -1ul,\n };\n\n __vm_ioctl(vm, KVM_MEMORY_ENCRYPT_REG_REGION, &range);\n\nNote, the checks in sev_mem_enc_register_region() that presumably exist to\nverify the incoming address+size are completely worthless, as both \"addr\"\nand \"size\" are u64s and SEV is 64-bit only, i.e. they _can't_ be greater\nthan ULONG_MAX. That wart will be cleaned up in the near future.\n\n\tif (range->addr > ULONG_MAX || range->size > ULONG_MAX)\n\t\treturn -EINVAL;\n\nOpportunistically add a comment to explain why the code calculates the\nnumber of pages the \"hard\" way, e.g. instead of just shifting @ulen."
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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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"arch/x86/kvm/svm/sev.c"
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],
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"versions": [
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{
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"version": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "6a8e3c82122737529b25ef2a048fbcc569d8c055",
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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": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "a703933bcfa5cc76ca10e2048464600e74136099",
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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": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "abcd43ff579abd0a654bb4636086e78819dd5f4c",
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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": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "b670833749ffd8681361db2bb047c6f2e3075f3a",
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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": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "ab423e5892826202a660b5ac85d1125b0e8301a5",
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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": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "28cc13ca20431b127d42d84ba10898d03e2c8267",
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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": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "c29ff288a2d97a6f4640a498a367cf0eb91312eb",
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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": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "1cba4dcd795daf6d257122779fb6a349edf03914",
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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": "78824fabc72e5e37d51e6e567fde70a4fc41a6d7",
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"lessThan": "8acffeef5ef720c35e513e322ab08e32683f32f2",
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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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"arch/x86/kvm/svm/sev.c"
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],
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"versions": [
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{
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"version": "5.9",
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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": "5.9",
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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": "5.10.258",
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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": "5.15.209",
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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": "6.1.175",
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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": "6.6.136",
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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": "6.12.83",
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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": "6.18.24",
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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": "6.19.14",
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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": "7.0.1",
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"lessThanOrEqual": "7.0.*",
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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",
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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": "5.9",
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"versionEndExcluding": "5.10.258"
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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": "5.9",
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"versionEndExcluding": "5.15.209"
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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": "5.9",
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"versionEndExcluding": "6.1.175"
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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": "5.9",
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"versionEndExcluding": "6.6.136"
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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": "5.9",
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"versionEndExcluding": "6.12.83"
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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": "5.9",
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"versionEndExcluding": "6.18.24"
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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": "5.9",
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"versionEndExcluding": "6.19.14"
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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": "5.9",
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"versionEndExcluding": "7.0.1"
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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": "5.9",
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"versionEndExcluding": "7.1"
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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/6a8e3c82122737529b25ef2a048fbcc569d8c055"
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},
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{
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"url": "https://git.kernel.org/stable/c/a703933bcfa5cc76ca10e2048464600e74136099"
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},
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{
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"url": "https://git.kernel.org/stable/c/abcd43ff579abd0a654bb4636086e78819dd5f4c"
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},
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{
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"url": "https://git.kernel.org/stable/c/b670833749ffd8681361db2bb047c6f2e3075f3a"
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},
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{
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"url": "https://git.kernel.org/stable/c/ab423e5892826202a660b5ac85d1125b0e8301a5"
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},
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{
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"url": "https://git.kernel.org/stable/c/28cc13ca20431b127d42d84ba10898d03e2c8267"
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},
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{
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"url": "https://git.kernel.org/stable/c/c29ff288a2d97a6f4640a498a367cf0eb91312eb"
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},
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{
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"url": "https://git.kernel.org/stable/c/1cba4dcd795daf6d257122779fb6a349edf03914"
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},
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{
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"url": "https://git.kernel.org/stable/c/8acffeef5ef720c35e513e322ab08e32683f32f2"
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}
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],
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"title": "KVM: SEV: Drop WARN on large size for KVM_MEMORY_ENCRYPT_REG_REGION",
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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-2026-31590",
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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": "2026-11-06T15:22:14.418696Z"
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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": "2026-11-06T15:32:18.788Z"
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}
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}
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]
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}
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} |