219 lines
12 KiB
JSON
219 lines
12 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-2026-46245",
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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": "2026-05-13T15:03:33.107Z",
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"datePublished": "2026-06-03T15:49:40.645Z",
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"dateUpdated": "2026-11-06T16:13:46.132Z"
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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": "2026-10-21T12:41:29.783Z"
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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/amd/display: Fix dc_link NULL handling in HPD init\n\namdgpu_dm_hpd_init() may see connectors without a valid dc_link.\n\nThe code already checks dc_link for the polling decision, but later\nunconditionally dereferences it when setting up HPD interrupts.\n\nAssign dc_link early and skip connectors where it is NULL.\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_irq.c:940 amdgpu_dm_hpd_init()\nerror: we previously assumed 'dc_link' could be null (see line 931)\n\ndrivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_irq.c\n 923 /*\n 924 * Analog connectors may be hot-plugged unlike other connector\n 925 * types that don't support HPD. Only poll analog connectors.\n 926 */\n 927 use_polling |=\n 928 amdgpu_dm_connector->dc_link &&\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ The patch adds this NULL check but hopefully it can be removed\n\n 929 dc_connector_supports_analog(amdgpu_dm_connector->dc_link->link_id.id);\n 930\n 931 dc_link = amdgpu_dm_connector->dc_link;\n\ndc_link assigned here.\n\n 932\n 933 /*\n 934 * Get a base driver irq reference for hpd ints for the lifetime\n 935 * of dm. Note that only hpd interrupt types are registered with\n 936 * base driver; hpd_rx types aren't. IOW, amdgpu_irq_get/put on\n 937 * hpd_rx isn't available. DM currently controls hpd_rx\n 938 * explicitly with dc_interrupt_set()\n 939 */\n--> 940 if (dc_link->irq_source_hpd != DC_IRQ_SOURCE_INVALID) {\n ^^^^^^^^^^^^^^^^^^^^^^^ If it's NULL then we are trouble because we dereference it here.\n\n 941 irq_type = dc_link->irq_source_hpd - DC_IRQ_SOURCE_HPD1;\n 942 /*\n 943 * TODO: There's a mismatch between mode_info.num_hpd\n 944 * and what bios reports as the # of connectors with hpd"
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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/amd/display/amdgpu_dm/amdgpu_dm_irq.c"
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],
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"versions": [
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{
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"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "d772e8570f19ac05fd9b11c8af86ada98f35f0c8",
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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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "0965f1e775130e325e74152d867d2e8ce865fa05",
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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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "1d15503e454bf117a0d0078332d48df86a41c828",
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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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "a490e4d3c9fed1e690c8de348416eea3a9f054ff",
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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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
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"lessThan": "226a40c06a183abaeb7529a4f54d6c203bd14407",
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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/amd/display/amdgpu_dm/amdgpu_dm_irq.c"
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],
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"versions": [
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{
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"version": "4.15",
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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": "4.15",
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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": "6.6.160",
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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": "6.12.114",
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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": "6.18.57",
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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": "6.19.4",
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"lessThanOrEqual": "6.19.*",
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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",
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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": "4.15",
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"versionEndExcluding": "6.6.160"
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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": "4.15",
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"versionEndExcluding": "6.12.114"
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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": "4.15",
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"versionEndExcluding": "6.18.57"
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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": "4.15",
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"versionEndExcluding": "6.19.4"
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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": "4.15",
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"versionEndExcluding": "7.0"
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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/d772e8570f19ac05fd9b11c8af86ada98f35f0c8"
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},
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{
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"url": "https://git.kernel.org/stable/c/0965f1e775130e325e74152d867d2e8ce865fa05"
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},
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{
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"url": "https://git.kernel.org/stable/c/1d15503e454bf117a0d0078332d48df86a41c828"
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},
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{
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"url": "https://git.kernel.org/stable/c/a490e4d3c9fed1e690c8de348416eea3a9f054ff"
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},
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{
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"url": "https://git.kernel.org/stable/c/226a40c06a183abaeb7529a4f54d6c203bd14407"
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}
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],
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"title": "drm/amd/display: Fix dc_link NULL handling in HPD init",
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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-2026-46245",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-11-06T16:12:46.754116Z"
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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": "2026-11-06T16:13:46.132Z"
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}
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}
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]
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}
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} |