{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b9aa02ca39a49740926c2c450a1505a4a0f8954a"
            },
            {
              "fixed": "07f8aaffee705e552c1f723ac8bf7eb137ad59c2"
            },
            {
              "fixed": "11483d80267db97fbe49f2df66385434256cc3b0"
            },
            {
              "fixed": "3f7b3728dd9011c915cbeaea77274ebe8366550d"
            },
            {
              "fixed": "bc7a0f721123ea260a42f1ded06dab844ba49434"
            },
            {
              "fixed": "7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74441.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: Fix race condition and ordering in port unregistration\n\nA synchronization issue exists during port unregistration where pending\npartner work items can race against workqueue destruction, leading to\nuse-after-free conditions:\n\n  cros_ec_ucsi cros_ec_ucsi.3.auto: error -ETIMEDOUT: PPM init failed\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\n  RIP: 0010:__queue_work+0x83/0x4a0\n  Call Trace:\n    \u003cIRQ\u003e\n    __cfi_delayed_work_timer_fn+0x10/0x10\n    run_timer_softirq+0x3b6/0xbd0\n    sched_clock_cpu+0xc/0x110\n    irq_exit_rcu+0x18d/0x330\n    fred_sysvec_apic_timer_interrupt+0x5e/0x80\n\nFix this by ensuring strict ordering and proper serialization during\nteardown:\n\n1. Move ucsi_unregister_partner() to the beginning of the teardown\nsequence and protect it under the connector mutex lock.\n2. Ensure all pending partner tasks are explicitly flushed and finished\nbefore the workqueue is destroyed.\n3. Switch from mod_delayed_work() to a cancel_delayed_work() and\nqueue_delayed_work() sequence. This guarantees that items currently marked\nas pending won't be scheduled an additional time, preventing a double\nrelease of resources which leads to the following crash:\n\n  Oops: general protection fault, probably for non-canonical address\n    0xdead000000000122: 0000 [#1] SMP NOPTI\n  Workqueue: cros_ec_ucsi.3.auto-con2 ucsi_poll_worker\n  RIP: 0010:ucsi_poll_worker+0x65/0x1e0\n  Call Trace:\n  \u003cTASK\u003e\n    process_scheduled_works+0x218/0x6d0\n    worker_thread+0x188/0x3f0\n    __cfi_worker_thread+0x10/0x10\n    kthread+0x226/0x2a0\n\nTo ensure these rules are applied identically across both the normal\nteardown and the ucsi_init() error paths, consolidate the cleanup logic\ninto a new helper, ucsi_unregister_port().",
  "id": "CVE-2026-74441",
  "modified": "2026-08-18T03:30:56.635180879Z",
  "published": "2026-08-15T12:26:49.359Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07f8aaffee705e552c1f723ac8bf7eb137ad59c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11483d80267db97fbe49f2df66385434256cc3b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f7b3728dd9011c915cbeaea77274ebe8366550d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc7a0f721123ea260a42f1ded06dab844ba49434"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74441.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74441"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "usb: typec: ucsi: Fix race condition and ordering in port unregistration"
}