221 lines
13 KiB
JSON
221 lines
13 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-2024-53193",
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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": "2024-11-19T17:17:25.014Z",
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"datePublished": "2024-12-27T13:49:35.566Z",
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"dateUpdated": "2026-08-05T11:44:33.733Z"
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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": "2026-08-05T11:44:33.733Z"
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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\nclk: clk-loongson2: Fix memory corruption bug in struct loongson2_clk_provider\n\nSome heap space is allocated for the flexible structure `struct\nclk_hw_onecell_data` and its flexible-array member `hws` through\nthe composite structure `struct loongson2_clk_provider` in function\n`loongson2_clk_probe()`, as shown below:\n\n289 struct loongson2_clk_provider *clp;\n\t...\n296 for (p = data; p->name; p++)\n297 clks_num++;\n298\n299 clp = devm_kzalloc(dev, struct_size(clp, clk_data.hws, clks_num),\n300 GFP_KERNEL);\n\nThen some data is written into the flexible array:\n\n350 clp->clk_data.hws[p->id] = hw;\n\nThis corrupts `clk_lock`, which is the spinlock variable immediately\nfollowing the `clk_data` member in `struct loongson2_clk_provider`:\n\nstruct loongson2_clk_provider {\n\tvoid __iomem *base;\n\tstruct device *dev;\n\tstruct clk_hw_onecell_data clk_data;\n\tspinlock_t clk_lock;\t/* protect access to DIV registers */\n};\n\nThe problem is that the flexible structure is currently placed in the\nmiddle of `struct loongson2_clk_provider` instead of at the end.\n\nFix this by moving `struct clk_hw_onecell_data clk_data;` to the end of\n`struct loongson2_clk_provider`. Also, add a code comment to help\nprevent this from happening again in case new members are added to the\nstructure in the future.\n\nThis change also fixes the following -Wflex-array-member-not-at-end\nwarning:\n\ndrivers/clk/clk-loongson2.c:32:36: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]"
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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 in a SoC platform clock-controller driver bound from device tree; there is no network or adjacent-network path, and the corrupted lock is only exercised through local clock consumers (DRM modeset ioctl, cpufreq, gate enable) on the affected Loongson-2K board.\nAC:L - The overlap between `clk_data.hws[]` and `clk_lock` is a deterministic consequence of the struct layout and occurs on every boot of an affected board with no race to win and no memory-layout grooming required; reaching the corrupted lock afterwards is a normal, repeatable operation.\nPR:L - The corruption itself is established at boot with no privileges at all, and an ordinary unprivileged local user can then drive code that acquires the clobbered spinlock (e.g. a modeset on the display controller's pix0/pix1 divider clocks via /dev/dri/card*), so no administrative capability is needed.\nUI:N - The memory corruption happens automatically during driver probe at boot, and triggering its effect requires only the attacker's own actions — no victim must open a file, mount a filesystem, or otherwise cooperate.\nS:U - Both the corrupted memory and the resulting impact are entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Kernel heap pointers (`struct clk_hw *`) are written into the spinlock's debug/lockdep fields where they are leaked to dmesg via spin_dump()/lockdep splats, and conversely the raw lock bytes are returned to consumers as a `struct clk_hw *` through `of_clk_hw_onecell_get()` index 0, giving a type-confused pointer the clk core dereferences for reads.\nI:H - This is a genuine memory-corruption primitive in both directions: clk_hw pointers overwrite live spinlock/lockdep state, and every subsequent lock acquire/release writes into what the clk framework treats as its `hws[]` pointer array, with the lockdep path further using a corrupted `lock_class` pointer for indexed writes.\nA:H - A clobbered spinlock leaves it permanently appearing held, so the first `spin_lock_irqsave()` from a divider set_rate or gate enable spins forever with interrupts disabled (hard lockup), and on debug/lockdep or PREEMPT_RT kernels the corrupted lock internals cause an immediate wild-pointer oops."
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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/clk/clk-loongson2.c"
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],
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"versions": [
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{
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"version": "9796ec0bd04bb0e70487127d44949ca0554df5d3",
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"lessThan": "76918202615f2ba7deda14901d9fff528a180099",
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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": "9796ec0bd04bb0e70487127d44949ca0554df5d3",
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"lessThan": "145de18065b9840687d9b4e63746238c1da25d22",
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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": "9796ec0bd04bb0e70487127d44949ca0554df5d3",
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"lessThan": "6e4bf018bb040955da53dae9f8628ef8fcec2dbe",
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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/clk/clk-loongson2.c"
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],
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"versions": [
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{
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"version": "6.10",
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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": "6.10",
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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": "6.11.11",
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"lessThanOrEqual": "6.11.*",
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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": "6.12.2",
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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": "6.10",
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"versionEndExcluding": "6.11.11"
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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": "6.10",
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"versionEndExcluding": "6.12.2"
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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": "6.10",
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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/76918202615f2ba7deda14901d9fff528a180099"
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},
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{
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"url": "https://git.kernel.org/stable/c/145de18065b9840687d9b4e63746238c1da25d22"
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},
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{
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"url": "https://git.kernel.org/stable/c/6e4bf018bb040955da53dae9f8628ef8fcec2dbe"
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}
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],
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"title": "clk: clk-loongson2: Fix memory corruption bug in struct loongson2_clk_provider",
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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-2024-53193",
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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": "2025-10-01T20:04:04.188198Z"
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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-787",
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"description": "CWE-787 Out-of-bounds Write"
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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": "2025-10-01T20:07:20.819Z"
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}
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}
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]
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}
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} |