stackdepot: fix stack_depot_save_flags() in NMI context

{
  "id": "b4b4900182ea6f9bef670a3e4b38ffc3b03281ccdef8147469e707c27d4d4965",
  "url": "https://osv.dev/vulnerability/CVE-2024-48876",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "stackdepot: fix stack_depot_save_flags() in NMI context",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: stackdepot: fix stack_depot_save_flags() in NMI context Per documentation, stack_depot_save_flags() was meant to be usable from NMI context if STACK_DEPOT_FLAG_CAN_ALLOC is unset. However, it still would try to take the pool_lock in an attempt to save a stack trace in the current pool (if space is available). This could result in deadlock if an NMI is handled while pool_lock is already held. To avoid deadlock, only try to take the lock in NMI context and give up if unsuccessful. The documentation is fixed to clearly convey this.",
    "evidence": "osv:CVE-2024-48876",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-48876",
      "aliases": [
        "CVE-2024-48876"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4434a56ec20925333d6cf4d4093641d063abd35b"
                },
                {
                  "fixed": "9bfeeeff2c92b9dd261198b601b45bde4c529841"
                },
                {
                  "fixed": "031e04bdc834cda3b054ef6b698503b2b97e8186"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-48876.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.8.0"
                },
                {
                  "fixed": "6.12.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-48876.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.016894353Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/031e04bdc834cda3b054ef6b698503b2b97e8186",
        "https://git.kernel.org/stable/c/9bfeeeff2c92b9dd261198b601b45bde4c529841",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/48xxx/CVE-2024-48876.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-48876",
        "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/2024/48xxx/CVE-2024-48876.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-48876",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 515882,
  "published_at": "2025-01-11T12:25:17.819+00:00"
}