{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b5daf93b809d13a194f8a8eeacfab1cfa241bbc3"
            },
            {
              "fixed": "70d9bd9a2e683afe6200b0c20af22f06f1a199a4"
            },
            {
              "fixed": "8414d2800c34528467df23ce6192c254a73e4459"
            },
            {
              "fixed": "555317d6100164748f7d09f80142739bd29f0cda"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.17.0"
            },
            {
              "fixed": "6.18.20"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31544.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix NULL dereference on notify error path\n\nSince commit b5daf93b809d1 (\"firmware: arm_scmi: Avoid notifier\nregistration for unsupported events\") the call chains leading to the helper\n__scmi_event_handler_get_ops expect an ERR_PTR to be returned on failure to\nget an handler for the requested event key, while the current helper can\nstill return a NULL when no handler could be found or created.\n\nFix by forcing an ERR_PTR return value when the handler reference is NULL.",
  "id": "CVE-2026-31544",
  "modified": "2026-07-08T05:37:37.756709216Z",
  "published": "2026-04-24T14:33:13.173Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/555317d6100164748f7d09f80142739bd29f0cda"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70d9bd9a2e683afe6200b0c20af22f06f1a199a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8414d2800c34528467df23ce6192c254a73e4459"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31544.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31544"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "firmware: arm_scmi: Fix NULL dereference on notify error path"
}