drm/amdgpu: avoid force-completing uninitialized UVD rings

{
  "id": "f311c9a6aaf28e2dae577491fe57f546d8b8bf2ed32f554c4d0fbbf3ba50d861",
  "url": "https://osv.dev/vulnerability/CVE-2026-89827",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/amdgpu: avoid force-completing uninitialized UVD rings",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: avoid force-completing uninitialized UVD rings uvd_v7_0_sw_init() does not initialize the UVD decode ring for an SR-IOV VF. However, amdgpu_uvd_resume() unconditionally force-completes the decode ring when restoring its fence sequence. Skip fence completion when the fence driver is not initialized.",
    "evidence": "osv:CVE-2026-89827",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.112",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.53",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-89827",
      "aliases": [
        "CVE-2026-89827"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0a33b11d26c6b7e975b54d469a739ffac29f67ab"
                },
                {
                  "fixed": "668cfb8ab3e22c10fe74307aac86b3cf456d6923"
                },
                {
                  "fixed": "863f08c485fbb51b6443681893e4044c7cb6cd51"
                },
                {
                  "fixed": "dc136795f9997adc8d3219f40e8e3afa7df7183f"
                },
                {
                  "fixed": "967a179463d3227dfaf9200fd654c1f5a26a11e8"
                },
                {
                  "fixed": "6760f5cb12d2366ddd58a2d8637f7583d73f596b"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89827.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.5.0"
                },
                {
                  "fixed": "6.6.160"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.112"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.53"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89827.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.221631842Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/668cfb8ab3e22c10fe74307aac86b3cf456d6923",
        "https://git.kernel.org/stable/c/6760f5cb12d2366ddd58a2d8637f7583d73f596b",
        "https://git.kernel.org/stable/c/863f08c485fbb51b6443681893e4044c7cb6cd51",
        "https://git.kernel.org/stable/c/967a179463d3227dfaf9200fd654c1f5a26a11e8",
        "https://git.kernel.org/stable/c/dc136795f9997adc8d3219f40e8e3afa7df7183f",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89827.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89827",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89827.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89827",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 514396,
  "published_at": "2026-09-16T10:30:59.419+00:00"
}