{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f04046f2577a5c76167333ca99d3903ee5331ba0"
            },
            {
              "fixed": "a29044c9c83513c7463de2adb84c169685562ad2"
            },
            {
              "fixed": "fc996c39689bb15aa80e5366809434f7258fb703"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "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-2026-90271.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\narm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt\n\nIf a user unbinds an MSC after mpam_disable() has been run in response\nto an error interrupt then a dereference of a NULL pointer occurs as\nmpam_disable() sets the drvdata to NULL. Add an early return to the driver\nremove callback to avoid this.",
  "id": "CVE-2026-90271",
  "modified": "2026-09-19T03:31:00.375680786Z",
  "published": "2026-09-17T16:08:05.304Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a29044c9c83513c7463de2adb84c169685562ad2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc996c39689bb15aa80e5366809434f7258fb703"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90271.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90271"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt"
}