CVE-2026-80728 (GCVE-0-2026-80728)
Vulnerability from cvelistv5
Published
2026-09-03 08:21
Modified
2026-09-29 12:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Revert "drm/amdgpu: fix aperture mapping leak" devres teardown is LIFO. The aperture devres node was registered after the DRM device node, so devres_release_all() unmaps the aperture before the DRM device release callback fires amdgpu_device_fini_sw(). IP sw_fini callbacks (e.g. vcn_v4_0_sw_fini) write to fw_shared through a pointer derived from aper_base_kaddr, causing a kernel page fault on probe failure / rollback: BUG: unable to handle page fault ... PMD 0 RIP: vcn_v4_0_sw_fini+0x7b/0x170 [amdgpu] Call Trace: amdgpu_device_fini_sw amdgpu_driver_release_kms devm_drm_dev_init_release devres_release_all This reverts commit d871e99879cb5fd1fa798b006b4888887e63a17a. (cherry picked from commit 336e0cd576817ac64a4b394ca2b3680029f3e37f)
References
Impacted products
Vendor Product Version
Linux Linux Version: 67bc3647e418e23dc0d17604bdba634a73de809f
Version: a343d028ad6c174da8dc6af560c51e6d140a6727
Version: 6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa
Version: f5988b5c300a32ff751724ffd33d5a8d5873e4a7
Version: ea772a440d56b285f4d491affac50ecd41f6b402
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   Linux Linux Version: 6.6.148   ≤
Version: 6.12.101   ≤
Version: 6.18.42   ≤
Version: 7.1.6   ≤
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_device.c",
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          "programFiles": [
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            "drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "status": "affected",
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              "versionType": "semver"
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              "status": "affected",
              "version": "6.18.42",
              "versionType": "semver"
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              "status": "affected",
              "version": "7.1.6",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.152",
                  "versionStartIncluding": "6.6.148",
                  "vulnerable": true
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                {
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                  "vulnerable": true
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                  "versionEndExcluding": "7.1.9",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"drm/amdgpu: fix aperture mapping leak\"\n\ndevres teardown is LIFO. The aperture devres node was registered after\nthe DRM device node, so devres_release_all() unmaps the aperture before\nthe DRM device release callback fires amdgpu_device_fini_sw(). IP\nsw_fini callbacks (e.g. vcn_v4_0_sw_fini) write to fw_shared through a\npointer derived from aper_base_kaddr, causing a kernel page fault on\nprobe failure / rollback:\n\n  BUG: unable to handle page fault ... PMD 0\n  RIP: vcn_v4_0_sw_fini+0x7b/0x170 [amdgpu]\n  Call Trace:\n    amdgpu_device_fini_sw\n    amdgpu_driver_release_kms\n    devm_drm_dev_init_release\n    devres_release_all\n\nThis reverts commit d871e99879cb5fd1fa798b006b4888887e63a17a.\n\n(cherry picked from commit 336e0cd576817ac64a4b394ca2b3680029f3e37f)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T12:08:20.287Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7380f1bfe9d7ed3a4ca9d99a5c4df840fff9af2a"
        },
        {
          "url": "https://git.kernel.org/stable/c/96d26143882f9cb47dcc1f3dd4e26d047e53ab9b"
        },
        {
          "url": "https://git.kernel.org/stable/c/a2e326c52c4bcecc033cd3ca2733fdbe30fbf55d"
        },
        {
          "url": "https://git.kernel.org/stable/c/496846a9411136eb9e86ad4f4e62d751bd1e1db5"
        },
        {
          "url": "https://git.kernel.org/stable/c/b96c529cd2551b78316a4afa3237b2ed96ba03c8"
        }
      ],
      "title": "Revert \"drm/amdgpu: fix aperture mapping leak\"",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80728",
    "datePublished": "2026-09-03T08:21:47.126Z",
    "dateReserved": "2026-08-26T14:34:25.789Z",
    "dateUpdated": "2026-09-29T12:08:20.287Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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