202 lines
11 KiB
JSON
202 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-2024-56652",
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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": "2024-12-27T15:00:39.841Z",
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"datePublished": "2024-12-27T15:06:16.454Z",
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"dateUpdated": "2026-08-05T11:45:49.934Z"
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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": "2026-08-05T11:45:49.934Z"
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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\ndrm/xe/reg_sr: Remove register pool\n\nThat pool implementation doesn't really work: if the krealloc happens to\nmove the memory and return another address, the entries in the xarray\nbecome invalid, leading to use-after-free later:\n\n\tBUG: KASAN: slab-use-after-free in xe_reg_sr_apply_mmio+0x570/0x760 [xe]\n\tRead of size 4 at addr ffff8881244b2590 by task modprobe/2753\n\n\tAllocated by task 2753:\n\t kasan_save_stack+0x39/0x70\n\t kasan_save_track+0x14/0x40\n\t kasan_save_alloc_info+0x37/0x60\n\t __kasan_kmalloc+0xc3/0xd0\n\t __kmalloc_node_track_caller_noprof+0x200/0x6d0\n\t krealloc_noprof+0x229/0x380\n\nSimplify the code to fix the bug. A better pooling strategy may be added\nback later if needed.\n\n(cherry picked from commit e5283bd4dfecbd3335f43b62a68e24dae23f59e4)"
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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 code is in the i915/xe GPU driver and is reached through local driver init and through GT/engine resets driven by a local DRM render-node client; there is no network-reachable path.\nAC:L - The dangling pointers arise deterministically whenever a save/restore table exceeds 16 entries (the normal case on modern platforms — the KASAN splat comes from a plain modprobe), and there is no race to win: the attacker can re-trigger the use of the freed entries at will by forcing GT resets.\nPR:L - A basic unprivileged user with an fd on /dev/dri/renderD* — standard for any desktop, container or GPU-compute session — can submit a hanging exec queue to force the GT reset that re-walks the dangling entries, and can spray the freed kmalloc-256 slab beforehand.\nUI:N - The corrupt xarray is built automatically during driver probe and the reset path is triggered entirely by the attacker's own GPU submissions; no victim action is required.\nS:U - The use-after-free, the out-of-bounds iomem write and the resulting corruption all occur within the host kernel's own security authority; no VM, sandbox or IOMMU boundary is crossed.\nC:H - This is a slab use-after-free read: freed heap contents are consumed as register descriptors and are additionally printed verbatim through the xe_reg_sr_dump() debugfs interface, and the UAF gives the attacker control over freed-object contents enabling broader disclosure.\nI:H - Freed memory supplies both the 28-bit offset and the value of an unbounded writel(val, mmio->regs + addr) against a SZ_4M mapping, yielding an out-of-bounds kernel iomem write plus arbitrary GT register reprogramming — including the RING_FORCE_TO_NONPRIV whitelist slots that gate what unprivileged GPU batches may touch.\nA:H - A KASAN-confirmed use-after-free that programs garbage register addresses/values into the GPU on every GT reset, wedging the device and causing oopses/panics from writes past the ioremapped BAR window; it can be re-triggered repeatedly."
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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/gpu/drm/xe/xe_reg_sr.c",
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"drivers/gpu/drm/xe/xe_reg_sr_types.h"
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],
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"versions": [
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{
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"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
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"lessThan": "b0193a31a0ca5a0f9e60bb4a86537d46b98111b8",
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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": "dd08ebf6c3525a7ea2186e636df064ea47281987",
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"lessThan": "d7b028656c29b22fcde1c6ee1df5b28fbba987b5",
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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/gpu/drm/xe/xe_reg_sr.c",
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"drivers/gpu/drm/xe/xe_reg_sr_types.h"
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],
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"versions": [
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{
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"version": "6.8",
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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": "6.8",
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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": "6.12.6",
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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": "6.13",
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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": "6.8",
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"versionEndExcluding": "6.12.6"
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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": "6.8",
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"versionEndExcluding": "6.13"
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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/b0193a31a0ca5a0f9e60bb4a86537d46b98111b8"
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},
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{
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"url": "https://git.kernel.org/stable/c/d7b028656c29b22fcde1c6ee1df5b28fbba987b5"
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}
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],
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"title": "drm/xe/reg_sr: Remove register pool",
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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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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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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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-2024-56652",
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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": "2025-02-11T15:41:38.610298Z"
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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": "2025-02-11T15:45:21.406Z"
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}
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}
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]
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}
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} |