{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482"
            },
            {
              "fixed": "806cb8fabfde7f830da5ae87777d52fdf50c4774"
            },
            {
              "fixed": "7865a1bfd20d10c03b083a5fc392d907ca5099b3"
            },
            {
              "fixed": "490b0385e4cfac691f7b18dde821c13e77b4770b"
            },
            {
              "fixed": "38149b57427c736c08d9aa4c7b87deacd53e9e63"
            },
            {
              "fixed": "a5b2a68a391b05d54552f13548a72a46c65006f7"
            },
            {
              "fixed": "f25d6e4ec4c257030592bd671f113cf9584c52f0"
            },
            {
              "fixed": "c0f2dedd41fe14dbe076c1672214802fb42cd8c8"
            },
            {
              "fixed": "d3ec78f8f8d48a04a9fac38d47275c34645e5103"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.7.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "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-2026-74331.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware_loader: Fix recursive lock in device_cache_fw_images()\n\nA recursive locking deadlock can occur in the firmware loader's power\nmanagement notification handler.\n\nDuring system suspend or hibernation preparation, fw_pm_notify() calls\ndevice_cache_fw_images(). This function acquires fw_lock to set the\nfirmware cache state to FW_LOADER_START_CACHE and then iterates over all\ndevices using dpm_for_each_dev() while still holding the lock.\n\nFor each device, dev_cache_fw_image() schedules asynchronous work to cache\nthe firmware. If memory allocation for the async work entry fails (e.g., in\nout-of-memory conditions), async_schedule_node_domain() falls back to\nexecuting the work function synchronously in the current thread.\n\nThe synchronous execution path (__async_dev_cache_fw_image() -\u003e\ncache_firmware() -\u003e request_firmware() -\u003e assign_fw()) attempts to acquire\nfw_lock again. Since the current thread already holds fw_lock, this results\nin a recursive locking deadlock.\n\nFix this by releasing fw_lock immediately after updating the cache state\nand before calling dpm_for_each_dev(). The lock is only needed to protect\nthe state update. Concurrent firmware requests will correctly see the\nFW_LOADER_START_CACHE state and use the piggyback mechanism, which is\nindependently protected by its own fwc-\u003ename_lock.",
  "id": "CVE-2026-74331",
  "modified": "2026-08-16T03:31:04.149847437Z",
  "published": "2026-08-15T05:58:24.420Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38149b57427c736c08d9aa4c7b87deacd53e9e63"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/490b0385e4cfac691f7b18dde821c13e77b4770b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7865a1bfd20d10c03b083a5fc392d907ca5099b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/806cb8fabfde7f830da5ae87777d52fdf50c4774"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a5b2a68a391b05d54552f13548a72a46c65006f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c0f2dedd41fe14dbe076c1672214802fb42cd8c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3ec78f8f8d48a04a9fac38d47275c34645e5103"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f25d6e4ec4c257030592bd671f113cf9584c52f0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74331.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74331"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "firmware_loader: Fix recursive lock in device_cache_fw_images()"
}