{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "2b624a2c18656ea32e0849e7bc0018ba3c97ca64"
            },
            {
              "fixed": "e184e46ca1ba652ab8053a10a51b39aad06d3f5c"
            },
            {
              "fixed": "3e234c6face8651045f46895dfe9c086ea64f03b"
            },
            {
              "fixed": "e773798e14ac0aea54ca9676083b91f445e5bc59"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.14.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89828.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix init ordering in amdgpu_vram_mgr_init()\n\ndrmm_cgroup_register_region() is called before INIT_LIST_HEAD() and\ngpu_buddy_init() in amdgpu_vram_mgr_init(). If it fails, the function\nreturns early and bypasses those initializations.\n\nSince adev-\u003emman.initialized is set to true before amdgpu_vram_mgr_init()\nis called, a failure triggers amdgpu_ttm_fini(), which calls\namdgpu_vram_mgr_fini(), which then:\n\n - Calls list_for_each_entry_safe() on reservations_pending and\n   reserved_pages, whose list_head::next pointers are zero-initialized\n   (NULL). The loop does not recognize them as empty and dereferences NULL.\n\n - Calls gpu_buddy_fini(), which iterates free_trees[] unconditionally\n   via for_each_free_tree(). Since mm-\u003efree_trees is NULL\n   (never allocated), this dereferences NULL.\n\nBoth result in a kernel panic on the module load error path.\n\nFix by moving drmm_cgroup_register_region() to after the list and buddy\nallocator are fully initialized, so the teardown path is safe to run.",
  "id": "CVE-2026-89828",
  "modified": "2026-09-18T03:30:52.608498301Z",
  "published": "2026-09-16T10:31:00.827Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e234c6face8651045f46895dfe9c086ea64f03b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e184e46ca1ba652ab8053a10a51b39aad06d3f5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e773798e14ac0aea54ca9676083b91f445e5bc59"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89828.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89828"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/amdgpu: Fix init ordering in amdgpu_vram_mgr_init()"
}