{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "142586409c8be7dc071bb94d7cd2d69ccfd99b6b"
            },
            {
              "fixed": "877423f595b60f8fe7c18b64a5d283d9e1732a13"
            },
            {
              "fixed": "6248eb1833ff0adfdbbadd5f846c2f22e02a01b0"
            },
            {
              "fixed": "ef81e4a1628ecfb9cfc442de10883f383faf17a1"
            },
            {
              "fixed": "928a8e9f523df845fc496bcb9811013b67aabec5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.27"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90383.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: sgi-gru: remove interrupt-context page-table walks\n\nThe GRU TLB miss handler walks a process's page tables without holding\npage-table locks or a reference to the mapped page. It also uses a kernel\npage-table accessor on user page tables and supports only PMD-level large\nmappings on x86-64.\n\nRemove the direct walker. Send interrupt faults directly to user polling\nmode so the existing call-OS fallback retries them in process context.\n\nRemove the mmap-lock failure statistic that can no longer be incremented.",
  "id": "CVE-2026-90383",
  "modified": "2026-09-19T03:30:56.214455523Z",
  "published": "2026-09-17T16:09:19.875Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6248eb1833ff0adfdbbadd5f846c2f22e02a01b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/877423f595b60f8fe7c18b64a5d283d9e1732a13"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/928a8e9f523df845fc496bcb9811013b67aabec5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef81e4a1628ecfb9cfc442de10883f383faf17a1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90383.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90383"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "misc: sgi-gru: remove interrupt-context page-table walks"
}