263 lines
14 KiB
JSON
263 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-2024-56538",
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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": "2024-12-27T14:03:05.986Z",
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"datePublished": "2024-12-27T14:11:20.685Z",
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"dateUpdated": "2026-10-30T12:20:17.114Z"
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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": "2026-10-30T12:20:17.114Z"
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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: zynqmp_kms: Unplug DRM device before removal\n\nPrevent userspace accesses to the DRM device from causing\nuse-after-frees by unplugging the device before we remove it. This\ncauses any further userspace accesses to result in an error without\nfurther calls into this driver's internals."
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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 vulnerability is reached through ioctl and mmap on the local DRM primary node /dev/dri/card0 of the zynqmp-dpsub device. There is no network or remote-peer input path into this driver.\nAC:L - This is not a narrow race — because drm_dev_unregister() never sets dev->unplugged, the guard state is broken permanently, so every subsequent ioctl/mmap from an already-open fd deterministically enters the torn-down driver. An attacker merely holds an fd open and loops ioctls, and the freed DMA channels, unmapped iomem, and destroyed mutex are hit reliably.\nPR:L - The attacker only needs an open file descriptor on the DRM primary node, which unprivileged local users of a graphical session obtain via logind ACLs or video-group membership on these embedded/kiosk systems. The reachable dumb-buffer ioctls carry flags 0, requiring neither DRM master nor DRM_AUTH.\nUI:N - The attacker's process simply keeps its fd open and polls; no victim action is needed at exploitation time. On ZynqMP FPGA MPSoCs the driver teardown occurs through routine platform events such as FPGA-region/device-tree-overlay reconfiguration and module reload rather than a deliberate victim action.\nS:U - The corruption is confined to kernel memory within the same security authority as the kernel itself. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The missing unmap_mapping_range() leaves userspace with live mappings of GEM DMA buffers whose backing reserved-memory pool was released by of_reserved_mem_device_release(), giving a direct read primitive into kernel memory that can be recycled for other allocations. The use-after-free on released DMA channels and driver state further enables disclosure of freed kernel object contents.\nI:H - Those same stale userspace mappings are writable, yielding a direct write-after-free into memory the kernel will reallocate, and the driver continues submitting DMA descriptors on channels already handed back via dma_release_channel(). This combination provides heap-grooming and control-flow-hijack primitives typical of an exploitable use-after-free.\nA:H - Post-removal ioctls write to devres-unmapped iomem with the APB clock gated and lock a mutex_destroy()'d dp->lock, producing an oops or an AXI bus hang that wedges the SoC. Any use-after-free of this kind reliably crashes the kernel even when not weaponized further."
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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/xlnx/zynqmp_kms.c"
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],
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"versions": [
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{
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"version": "d76271d22694e874ed70791702db9252ffe96a4c",
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"lessThan": "0c8ca1da81e5a9787284eb84c0c6ae927f063c15",
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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": "d76271d22694e874ed70791702db9252ffe96a4c",
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"lessThan": "a17b9afe58c474657449cf87e238b1788200576b",
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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": "d76271d22694e874ed70791702db9252ffe96a4c",
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"lessThan": "4fb97432e28a7e136b2d76135d50e988ada8e1af",
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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": "d76271d22694e874ed70791702db9252ffe96a4c",
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"lessThan": "692f52aedccbf79b212a1e14e3735192b4c24a7d",
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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": "d76271d22694e874ed70791702db9252ffe96a4c",
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"lessThan": "2e07c88914fc5289c21820b1aa94f058feb38197",
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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/xlnx/zynqmp_kms.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": "6.1.191",
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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": "6.6.64",
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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": "6.11.11",
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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": "5.9",
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"versionEndExcluding": "6.1.191"
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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": "6.6.64"
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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": "6.11.11"
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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": "5.9",
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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": "5.9",
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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/0c8ca1da81e5a9787284eb84c0c6ae927f063c15"
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},
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{
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"url": "https://git.kernel.org/stable/c/a17b9afe58c474657449cf87e238b1788200576b"
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},
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{
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"url": "https://git.kernel.org/stable/c/4fb97432e28a7e136b2d76135d50e988ada8e1af"
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},
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{
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"url": "https://git.kernel.org/stable/c/692f52aedccbf79b212a1e14e3735192b4c24a7d"
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},
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{
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"url": "https://git.kernel.org/stable/c/2e07c88914fc5289c21820b1aa94f058feb38197"
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}
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],
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"title": "drm: zynqmp_kms: Unplug DRM device before removal",
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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-2024-56538",
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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": "2025-02-11T15:42:57.597278Z"
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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": "2025-02-11T15:45:25.403Z"
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}
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}
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]
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}
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} |