firmware: qcom: uefisecapp: fix efivars registration race

{
  "id": "7b8bfce0afb9e249cebe248f1eb7b129fc0b175024a19650b2b1442e5bf5fedf",
  "url": "https://osv.dev/vulnerability/CVE-2025-21998",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "firmware: qcom: uefisecapp: fix efivars registration race",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: uefisecapp: fix efivars registration race Since the conversion to using the TZ allocator, the efivars service is registered before the memory pool has been allocated, something which can lead to a NULL-pointer dereference in case of a racing EFI variable access. Make sure that all resources have been set up before registering the efivars.",
    "evidence": "osv:CVE-2025-21998",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.21",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.13.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-21998",
      "aliases": [
        "CVE-2025-21998"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                },
                {
                  "fixed": "c4e37b381a7a243c298a4858fc0a5a74e737c79a"
                },
                {
                  "fixed": "f15a2b96a0e41c426c63a932d0e63cde7b9784aa"
                },
                {
                  "fixed": "da8d493a80993972c427002684d0742560f3be4a"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21998.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.11.0"
                },
                {
                  "fixed": "6.12.21"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.13.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21998.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.013839360Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/c4e37b381a7a243c298a4858fc0a5a74e737c79a",
        "https://git.kernel.org/stable/c/da8d493a80993972c427002684d0742560f3be4a",
        "https://git.kernel.org/stable/c/f15a2b96a0e41c426c63a932d0e63cde7b9784aa",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21998.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-21998",
        "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/2025/21xxx/CVE-2025-21998.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-21998",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497876,
  "published_at": "2025-04-03T07:19:02.272+00:00"
}