{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7034764a1e4a6edbb60914e89aad8384e3fe5d17"
            },
            {
              "fixed": "46696b0b2123475d7f95909435c09808fc5ffd23"
            },
            {
              "fixed": "bb75bd7d9ae7672034f73ce67a57e6ac89bb39e5"
            },
            {
              "fixed": "f5e1cc9a284bff2510981643a5bca4bc4c21b81a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.11.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74405.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nOPP: Fix race between OPP addition and lookup\n\nA race exists between dev_pm_opp_add_dynamic() and\ndev_pm_opp_find_freq_exact():\n\n  CPU0 (add)                          CPU1 (lookup)\n  -------------------------------     ------------------------------\n  _opp_add()\n    mutex_lock()\n    list_add(\u0026new_opp-\u003enode, head)\n    mutex_unlock()                    _opp_table_find_key()\n                                        mutex_lock()\n                                        dev_pm_opp_get(opp)\n                                          kref_get()\n                                        mutex_unlock()\n    kref_init(\u0026new_opp-\u003ekref)\n                                      dev_pm_opp_put()\n                                        kref_put_mutex()\n\nThe newly added OPP is inserted into the list before its kref is\ninitialized. A concurrent lookup can find this OPP and increment its\nreference count while it is still uninitialized, leading to refcount\ncorruption and a potential premature free.\n\nFix this by initializing -\u003ekref and -\u003eopp_table before making the OPP\nvisible via list_add(). This ensures any concurrent lookup observes a\nfully initialized object.\n\n[ Viresh: Updated commit log ]",
  "id": "CVE-2026-74405",
  "modified": "2026-08-16T03:31:24.270407721Z",
  "published": "2026-08-15T05:59:14.719Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46696b0b2123475d7f95909435c09808fc5ffd23"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb75bd7d9ae7672034f73ce67a57e6ac89bb39e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5e1cc9a284bff2510981643a5bca4bc4c21b81a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74405.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74405"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "OPP: Fix race between OPP addition and lookup"
}