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-2026-64118",
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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": "2026-07-19T07:54:57.035Z",
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"datePublished": "2026-07-19T15:40:17.643Z",
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"dateUpdated": "2026-10-19T20:28:13.114Z"
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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": "2026-08-05T12:39:27.598Z"
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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\nqed: fix double free in qed_cxt_tables_alloc()\n\nIf one of the later PF or VF CID bitmap allocations fails,\nqed_cid_map_alloc() jumps to cid_map_fail and frees the previously\nallocated CID bitmaps before returning an error. qed_cxt_tables_alloc()\nthen calls qed_cxt_mngr_free(), which invokes qed_cid_map_free()\nagain.\n\nFix this by setting each CID bitmap pointer to NULL after bitmap_free()\nto avoid double free.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1-rc3.\n\nRuntime reproduction was not attempted because exercising the failing\nallocation path requires device-specific setup."
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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:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.4,
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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 code runs only during PF driver resource initialization (probe or firmware-initiated recovery), reached via local kernel driver bring-up paths rather than network packet processing or remote protocol handlers.\nAC:L - An attacker who can influence system memory pressure (e.g., via local memory exhaustion) can reliably force `bitmap_zalloc()` failures during the multi-step CID bitmap allocation loop, and can also time this with firmware recovery reprobes that re-enter `qed_resc_alloc()`.\nPR:N - No local account or capability is strictly required if a remote attacker can induce firmware process-kill recovery on an internet-facing QED host, causing automatic re-execution of `qed_resc_alloc()` where post-incident memory pressure can trigger the failing allocation path.\nUI:N - Exploitation does not require any victim user action such as opening files or mounting filesystems; driver recovery and re-allocation occur automatically in kernel context once the error/recovery conditions are met.\nS:U - Impact is confined to kernel heap corruption and potential privilege escalation within the same kernel security boundary, not a cross-authority escape such as VM breakout or IOMMU bypass.\nC:H - A double-free of kmalloc-allocated CID bitmap objects corrupts the kernel slab allocator state, which is classically leverageable for arbitrary kernel memory disclosure through heap manipulation primitives.\nI:H - Slab double-free is a standard heap corruption primitive that can be developed into arbitrary kernel writes and control-flow hijacking, not merely a bounded or cosmetic modification.\nA:H - Double-free during driver initialization can cause immediate kernel oops/panic from allocator corruption, and repeated recovery attempts on production QED hardware can produce sustained denial of service."
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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/ethernet/qlogic/qed/qed_cxt.c"
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],
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"versions": [
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{
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"version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
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"lessThan": "9fe030719bd083b766602692ee96c8c985798e3c",
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"status": "affected",
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},
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"version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
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"lessThan": "06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227",
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"status": "affected",
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},
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"status": "affected",
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"status": "affected",
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"status": "affected",
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"lessThan": "a04c207f0801abdd23a169b5f902a9845059a65a",
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"status": "affected",
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{
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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/net/ethernet/qlogic/qed/qed_cxt.c"
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],
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"versions": [
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{
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"version": "4.4",
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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": "4.4",
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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": "5.10.259",
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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": "5.15.210",
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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": "6.6.142",
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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": "6.12.92",
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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": "6.18.34",
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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": "7.0.11",
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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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"references": [
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},
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"url": "https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227"
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{
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"url": "https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb"
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},
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{
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"url": "https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684"
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},
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{
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"url": "https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c"
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},
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{
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"url": "https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c"
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},
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{
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"url": "https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a"
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{
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"url": "https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de"
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}
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],
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"title": "qed: fix double free in qed_cxt_tables_alloc()",
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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-2026-64118",
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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": "2026-10-16T15:36:40.630775Z"
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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-415",
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"description": "CWE-415 Double 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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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T20:28:13.114Z"
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} |