CVE-2026-68102 (GCVE-0-2026-68102)

Vulnerability from cvelistv5 – Published: 2026-08-10 11:58 – Updated: 2026-08-17 04:58
VLAI
Title
drm/amdgpu: fix aperture mapping leak
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix aperture mapping leak amdgpu_pci_remove() calls drm_dev_unplug() before invoking the driver fini routines. This causes drm_dev_enter() in amdgpu_ttm_fini() to always return false, so iounmap(aper_base_kaddr) never runs on normal driver unload, leaving an orphaned entry in the x86 PAT interval tree. On connected_to_cpu hardware, the aperture is mapped write-back (WB) via ioremap_cache(). On reload, IP discovery calls memremap(..., MEMREMAP_WC) over the same range. The WC vs WB conflict causes: ioremap error for 0x..., requested 0x1, got 0x0 amdgpu: discovery failed: -2 Fix by switching to devres-managed mappings so cleanup is guaranteed regardless of drm_dev_enter() state: - connected_to_cpu path: devm_memremap(MEMREMAP_WB). For IORESOURCE_SYSTEM_RAM ranges this takes the try_ram_remap() shortcut, returning __va(offset) from the existing kernel direct map. No new ioremap VA or PAT entry is created, so there is nothing to orphan. - dGPU path: devm_ioremap_wc() registers iounmap() as a devres action, guaranteeing cleanup at device_del() time. Also remove iounmap(aper_base_kaddr) from amdgpu_device_unmap_mmio() since the mapping is now devres-owned. v2: Remove redundant x86_64 guard (Lijo) (cherry picked from commit d871e99879cb5fd1fa798b006b4888887e63a17a)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9d0af8b4def0de6b734ec8db08e96da0458facb6 , < 67bc3647e418e23dc0d17604bdba634a73de809f (git)
Affected: 9d0af8b4def0de6b734ec8db08e96da0458facb6 , < a343d028ad6c174da8dc6af560c51e6d140a6727 (git)
Affected: 9d0af8b4def0de6b734ec8db08e96da0458facb6 , < 6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa (git)
Affected: 9d0af8b4def0de6b734ec8db08e96da0458facb6 , < f5988b5c300a32ff751724ffd33d5a8d5873e4a7 (git)
Affected: 9d0af8b4def0de6b734ec8db08e96da0458facb6 , < ea772a440d56b285f4d491affac50ecd41f6b402 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_device.c",
            "drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "67bc3647e418e23dc0d17604bdba634a73de809f",
              "status": "affected",
              "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
              "versionType": "git"
            },
            {
              "lessThan": "a343d028ad6c174da8dc6af560c51e6d140a6727",
              "status": "affected",
              "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
              "versionType": "git"
            },
            {
              "lessThan": "6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa",
              "status": "affected",
              "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
              "versionType": "git"
            },
            {
              "lessThan": "f5988b5c300a32ff751724ffd33d5a8d5873e4a7",
              "status": "affected",
              "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
              "versionType": "git"
            },
            {
              "lessThan": "ea772a440d56b285f4d491affac50ecd41f6b402",
              "status": "affected",
              "version": "9d0af8b4def0de6b734ec8db08e96da0458facb6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_device.c",
            "drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T04:58:50.338Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68102",
    "datePublished": "2026-08-10T11:58:18.093Z",
    "dateReserved": "2026-07-30T09:28:09.368Z",
    "dateUpdated": "2026-08-17T04:58:50.338Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-68102",
      "date": "2026-08-20",
      "epss": "0.00168",
      "percentile": "0.06507"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-68102\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-10T13:19:54.840\",\"lastModified\":\"2026-08-17T05:18:09.540\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpu/drm/amd/amdgpu/amdgpu_device.c\",\"drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"9d0af8b4def0de6b734ec8db08e96da0458facb6\",\"lessThan\":\"67bc3647e418e23dc0d17604bdba634a73de809f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9d0af8b4def0de6b734ec8db08e96da0458facb6\",\"lessThan\":\"a343d028ad6c174da8dc6af560c51e6d140a6727\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9d0af8b4def0de6b734ec8db08e96da0458facb6\",\"lessThan\":\"6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9d0af8b4def0de6b734ec8db08e96da0458facb6\",\"lessThan\":\"f5988b5c300a32ff751724ffd33d5a8d5873e4a7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9d0af8b4def0de6b734ec8db08e96da0458facb6\",\"lessThan\":\"ea772a440d56b285f4d491affac50ecd41f6b402\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpu/drm/amd/amdgpu/amdgpu_device.c\",\"drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.13\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.13\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.148\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.101\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.42\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.6\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/67bc3647e418e23dc0d17604bdba634a73de809f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a343d028ad6c174da8dc6af560c51e6d140a6727\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ea772a440d56b285f4d491affac50ecd41f6b402\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f5988b5c300a32ff751724ffd33d5a8d5873e4a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-13T14:56:42+00:00",
      "cve": "CVE-2026-68102",
      "id": "CVE-2026-68102",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "44",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/amdgpu: fix aperture mapping leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68102.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-08-12T16:23:00Z",
      "cve": "CVE-2026-68102",
      "id": "CVE-2026-68102",
      "initial_release_date": "2026-08-12T16:23:00Z",
      "product_status:known_affected": "118",
      "product_status:known_not_affected": "178",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68102",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68102.json",
      "version": "2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.