{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68102",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.368Z",
        "datePublished": "2026-08-10T11:58:18.093Z",
        "dateUpdated": "2026-08-17T04:58:50.338Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:58:50.338Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix aperture mapping leak\n\namdgpu_pci_remove() calls drm_dev_unplug() before invoking the driver\nfini routines. This causes drm_dev_enter() in amdgpu_ttm_fini() to\nalways return false, so iounmap(aper_base_kaddr) never runs on normal\ndriver unload, leaving an orphaned entry in the x86 PAT interval tree.\n\nOn connected_to_cpu hardware, the aperture is mapped write-back (WB) via\nioremap_cache(). On reload, IP discovery calls memremap(..., MEMREMAP_WC)\nover the same range. The WC vs WB conflict causes:\n\n  ioremap error for 0x..., requested 0x1, got 0x0\n  amdgpu: discovery failed: -2\n\nFix by switching to devres-managed mappings so cleanup is guaranteed\nregardless of drm_dev_enter() state:\n\n- connected_to_cpu path: devm_memremap(MEMREMAP_WB). For\n  IORESOURCE_SYSTEM_RAM ranges this takes the try_ram_remap() shortcut,\n  returning __va(offset) from the existing kernel direct map. No new\n  ioremap VA or PAT entry is created, so there is nothing to orphan.\n\n- dGPU path: devm_ioremap_wc() registers iounmap() as a devres action,\n  guaranteeing cleanup at device_del() time.\n\nAlso remove iounmap(aper_base_kaddr) from amdgpu_device_unmap_mmio()\nsince the mapping is now devres-owned.\n\nv2: Remove redundant x86_64 guard (Lijo)\n\n(cherry picked from commit d871e99879cb5fd1fa798b006b4888887e63a17a)"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/amdgpu/amdgpu_device.c",
                        "drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"
                    ],
                    "versions": [
                        {
                            "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
                            "lessThan": "67bc3647e418e23dc0d17604bdba634a73de809f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
                            "lessThan": "a343d028ad6c174da8dc6af560c51e6d140a6727",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
                            "lessThan": "6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
                            "lessThan": "f5988b5c300a32ff751724ffd33d5a8d5873e4a7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
                            "lessThan": "ea772a440d56b285f4d491affac50ecd41f6b402",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/amdgpu/amdgpu_device.c",
                        "drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"
                    ],
                    "versions": [
                        {
                            "version": "5.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.148",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.6.148"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.12.101"
                                },
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                                    "versionStartIncluding": "5.13",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/67bc3647e418e23dc0d17604bdba634a73de809f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a343d028ad6c174da8dc6af560c51e6d140a6727"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f5988b5c300a32ff751724ffd33d5a8d5873e4a7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ea772a440d56b285f4d491affac50ecd41f6b402"
                }
            ],
            "title": "drm/amdgpu: fix aperture mapping leak",
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}