310 lines
15 KiB
JSON
310 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-2026-64372",
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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": "2026-07-19T15:36:31.783Z",
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"datePublished": "2026-07-25T08:50:24.733Z",
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"dateUpdated": "2026-10-19T20:38:25.140Z"
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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": "2026-08-17T04:54:22.197Z"
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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\ncpufreq: pcc: fix use-after-free and double free in _OSC evaluation\n\npcc_cpufreq_do_osc() calls acpi_evaluate_object() twice for the\ntwo-phase _OSC negotiation. Between the two calls it freed\noutput.pointer but left output.length unchanged. Since\nacpi_evaluate_object() treats a non-zero length with a non-NULL\npointer as an existing buffer to write into, the second call wrote\ninto freed memory (use-after-free). The subsequent kfree(output.pointer)\nat out_free then freed the same pointer a second time (double free).\n\nReset output.pointer to NULL and output.length to ACPI_ALLOCATE_BUFFER\nafter freeing the first result, so ACPICA allocates a fresh buffer for\neach phase independently."
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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 flaw is reached during local initialization of the x86 PCC cpufreq driver on systems exposing the required ACPI PCC objects; no network, radio, or hot-plug input reaches this path.\nAC:L - Once two-phase _OSC negotiation succeeds, the stale-buffer write and subsequent double free occur deterministically without a race or other condition beyond attacker influence.\nPR:L - PCC platform-device creation and driver probing can occur automatically during boot or module autoload, leaving exploitable heap corruption without the attacker needing CAP_SYS_MODULE. A basic local user can groom and consume the resulting overlapping or corrupted slab objects.\nUI:N - The vulnerable driver probe and _OSC negotiation occur automatically and require no victim action.\nS:U - The corruption affects the host kernel within the same security authority and does not inherently cross a VM, IOMMU, or sandbox boundary.\nC:H - The use-after-free and double free can produce overlapping kernel heap objects, enabling disclosure of arbitrary kernel memory.\nI:H - The freed-object write and allocator freelist corruption can enable arbitrary kernel-memory modification and control-flow hijacking.\nA:H - Hardened allocators may immediately detect the double free and stop the kernel, while other configurations can crash or panic from the corrupted slab freelist."
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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/cpufreq/pcc-cpufreq.c"
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],
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"versions": [
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{
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"version": "0f1d683fb35d6c6f49ef696c95757f3970682a0e",
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"lessThan": "8e454e9d0bc03446d610ee49abec9dfd424f6541",
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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": "0f1d683fb35d6c6f49ef696c95757f3970682a0e",
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"lessThan": "632666a63116d8061c62a988d1ca39dcd6d27c9b",
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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": "0f1d683fb35d6c6f49ef696c95757f3970682a0e",
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"lessThan": "5cdb25f144b101083d8bf3fd023ad87fbe6850d7",
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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": "0f1d683fb35d6c6f49ef696c95757f3970682a0e",
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"lessThan": "982c9f92d57bda2b769851ff6d90d43dcf5f3734",
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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": "0f1d683fb35d6c6f49ef696c95757f3970682a0e",
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"lessThan": "a36ca93a8ba57464e521d70a337d37f069064111",
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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": "0f1d683fb35d6c6f49ef696c95757f3970682a0e",
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"lessThan": "6ba6f6783be2ffeb2cbcdc9321c4b9f708f796f7",
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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": "0f1d683fb35d6c6f49ef696c95757f3970682a0e",
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"lessThan": "0e3c739a2f6fc1de5b19a8839ab80696b9cb2a29",
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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": "0f1d683fb35d6c6f49ef696c95757f3970682a0e",
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"lessThan": "266d3dd8b757b48a576e90f018b51f7b7563cc32",
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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/cpufreq/pcc-cpufreq.c"
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],
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"versions": [
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{
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"version": "2.6.34",
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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": "2.6.34",
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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": "6.12.96",
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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": "6.18.39",
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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": "7.1.4",
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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": "2.6.34",
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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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"versionStartIncluding": "2.6.34",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/8e454e9d0bc03446d610ee49abec9dfd424f6541"
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},
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{
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"url": "https://git.kernel.org/stable/c/632666a63116d8061c62a988d1ca39dcd6d27c9b"
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},
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{
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"url": "https://git.kernel.org/stable/c/5cdb25f144b101083d8bf3fd023ad87fbe6850d7"
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},
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{
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"url": "https://git.kernel.org/stable/c/982c9f92d57bda2b769851ff6d90d43dcf5f3734"
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},
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{
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"url": "https://git.kernel.org/stable/c/a36ca93a8ba57464e521d70a337d37f069064111"
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},
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{
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"url": "https://git.kernel.org/stable/c/6ba6f6783be2ffeb2cbcdc9321c4b9f708f796f7"
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},
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{
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"url": "https://git.kernel.org/stable/c/0e3c739a2f6fc1de5b19a8839ab80696b9cb2a29"
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},
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{
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"url": "https://git.kernel.org/stable/c/266d3dd8b757b48a576e90f018b51f7b7563cc32"
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}
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],
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"title": "cpufreq: pcc: fix use-after-free and double free in _OSC evaluation",
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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-2026-64372",
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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": "2026-10-16T15:39:34.226056Z"
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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-416",
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"description": "CWE-416 Use After Free"
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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": "2026-10-19T20:38:25.140Z"
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}
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}
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]
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}
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} |