{"id":"CVE-2026-74441","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-74441","generatedAt":"2026-10-28T08:10:21.516Z","title":"In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: Fix race condition and ordering in port unregistration A synchronization issue exists during port unregistration where pending partner work items can race against…","description":"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    <IRQ>\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  <TASK>\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().","published":"2026-08-15T13:17:49.000Z","lastModified":"2026-08-23T13:16:44.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00173,"percentile":0.06626,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/07f8aaffee705e552c1f723ac8bf7eb137ad59c2","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/11483d80267db97fbe49f2df66385434256cc3b0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3f7b3728dd9011c915cbeaea77274ebe8366550d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7b63c680ff605f60f056e5f2c323f1a602aee182","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bc7a0f721123ea260a42f1ded06dab844ba49434","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74441","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}