gve: fix NULL dereference due to missing ptp adjfine

{
  "id": "7de17022e2c5c986a3b828d6d9cb673059d8c327e1550bfc895f54dc8cdeffae",
  "url": "https://osv.dev/vulnerability/CVE-2026-80564",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "gve: fix NULL dereference due to missing ptp adjfine",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: gve: fix NULL dereference due to missing ptp adjfine Fix NULL dereference due to missing implementation of adjfine, which can be triggered from usermode as follows: sudo ./testptp -d /dev/ptp0 -f 0 [ 551.943697] BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] [ 552.061946] Call Trace: [ 552.064487] [ 552.066681] ptp_clock_adjtime+0x1c0/0x2c0 [ 552.070874] ? get_clock_desc+0x6b/0xb0 [ 552.074825] pc_clock_adjtime+0x78/0xc0 [ 552.078755] __do_sys_clock_adjtime+0x85/0x110 [ 552.083293] do_syscall_64+0xea/0x610",
    "evidence": "osv:CVE-2026-80564",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.46",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-80564",
      "aliases": [
        "CVE-2026-80564"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "acd16380523b400400523fe54c7499320e558e80"
                },
                {
                  "fixed": "e9482feeed66d4bc805458631013e9b61b1a9eaf"
                },
                {
                  "fixed": "fa9b991bf678dd412dc0ed080672d34d7558d7af"
                },
                {
                  "fixed": "3992ced109c70b771efad9e51ae68e5c7a04dea3"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80564.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.17.0"
                },
                {
                  "fixed": "6.18.46"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.1.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80564.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.335484534Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3992ced109c70b771efad9e51ae68e5c7a04dea3",
        "https://git.kernel.org/stable/c/e9482feeed66d4bc805458631013e9b61b1a9eaf",
        "https://git.kernel.org/stable/c/fa9b991bf678dd412dc0ed080672d34d7558d7af",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80564.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80564",
        "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/2026/80xxx/CVE-2026-80564.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-80564",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 521333,
  "published_at": "2026-08-26T14:37:28.351+00:00"
}