{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f9b94daa542a8d2532f0930f01cd9aec2d19621b"
            },
            {
              "fixed": "77275ccea06eaf297e8e6ac3fc830cb72086379a"
            },
            {
              "fixed": "8c1ecdcdea738efe0494af908f12c0ae3a97fffa"
            },
            {
              "fixed": "81063bbb16c4fcf0136c9117d5e49d3621dd6a1e"
            },
            {
              "fixed": "234b1a72e9706fe20c08c96f4374ec8e83b934cb"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.8.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89502.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Free cpu_buffer::free_page with subbuf_order\n\nWhen sub-buffers use an order greater than 0, cpu_buffer-\u003efree_page is\nallocated with subbuf_order. Use the correct order for\ncpu_buffer-\u003efree_page.",
  "id": "CVE-2026-89502",
  "modified": "2026-09-13T03:30:55.856171841Z",
  "published": "2026-09-11T19:43:50.700Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/234b1a72e9706fe20c08c96f4374ec8e83b934cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77275ccea06eaf297e8e6ac3fc830cb72086379a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81063bbb16c4fcf0136c9117d5e49d3621dd6a1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c1ecdcdea738efe0494af908f12c0ae3a97fffa"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89502.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89502"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ring-buffer: Free cpu_buffer::free_page with subbuf_order"
}