{"api_version":"1","generated_at":"2026-08-16T06:00:26+00:00","cve":"CVE-2026-74441","urls":{"html":"https://cve.report/CVE-2026-74441","api":"https://cve.report/api/cve/CVE-2026-74441.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74441","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74441"},"summary":{"title":"usb: typec: ucsi: Fix race condition and ordering in port unregistration","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().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 13:17:48","updated_at":"2026-08-15 13:17:48"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/07f8aaffee705e552c1f723ac8bf7eb137ad59c2","name":"https://git.kernel.org/stable/c/07f8aaffee705e552c1f723ac8bf7eb137ad59c2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261","name":"https://git.kernel.org/stable/c/7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bc7a0f721123ea260a42f1ded06dab844ba49434","name":"https://git.kernel.org/stable/c/bc7a0f721123ea260a42f1ded06dab844ba49434","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3f7b3728dd9011c915cbeaea77274ebe8366550d","name":"https://git.kernel.org/stable/c/3f7b3728dd9011c915cbeaea77274ebe8366550d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/11483d80267db97fbe49f2df66385434256cc3b0","name":"https://git.kernel.org/stable/c/11483d80267db97fbe49f2df66385434256cc3b0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74441","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74441","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b9aa02ca39a49740926c2c450a1505a4a0f8954a 07f8aaffee705e552c1f723ac8bf7eb137ad59c2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b9aa02ca39a49740926c2c450a1505a4a0f8954a 11483d80267db97fbe49f2df66385434256cc3b0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b9aa02ca39a49740926c2c450a1505a4a0f8954a 3f7b3728dd9011c915cbeaea77274ebe8366550d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b9aa02ca39a49740926c2c450a1505a4a0f8954a bc7a0f721123ea260a42f1ded06dab844ba49434 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b9aa02ca39a49740926c2c450a1505a4a0f8954a 7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.151 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.103 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/typec/ucsi/ucsi.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"07f8aaffee705e552c1f723ac8bf7eb137ad59c2","status":"affected","version":"b9aa02ca39a49740926c2c450a1505a4a0f8954a","versionType":"git"},{"lessThan":"11483d80267db97fbe49f2df66385434256cc3b0","status":"affected","version":"b9aa02ca39a49740926c2c450a1505a4a0f8954a","versionType":"git"},{"lessThan":"3f7b3728dd9011c915cbeaea77274ebe8366550d","status":"affected","version":"b9aa02ca39a49740926c2c450a1505a4a0f8954a","versionType":"git"},{"lessThan":"bc7a0f721123ea260a42f1ded06dab844ba49434","status":"affected","version":"b9aa02ca39a49740926c2c450a1505a4a0f8954a","versionType":"git"},{"lessThan":"7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261","status":"affected","version":"b9aa02ca39a49740926c2c450a1505a4a0f8954a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/typec/ucsi/ucsi.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.16"},{"lessThan":"5.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.151","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"5.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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()."}],"providerMetadata":{"dateUpdated":"2026-08-15T12:26:49.359Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/07f8aaffee705e552c1f723ac8bf7eb137ad59c2"},{"url":"https://git.kernel.org/stable/c/11483d80267db97fbe49f2df66385434256cc3b0"},{"url":"https://git.kernel.org/stable/c/3f7b3728dd9011c915cbeaea77274ebe8366550d"},{"url":"https://git.kernel.org/stable/c/bc7a0f721123ea260a42f1ded06dab844ba49434"},{"url":"https://git.kernel.org/stable/c/7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261"}],"title":"usb: typec: ucsi: Fix race condition and ordering in port unregistration","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74441","datePublished":"2026-08-15T12:26:49.359Z","dateReserved":"2026-08-15T05:44:03.897Z","dateUpdated":"2026-08-15T12:26:49.359Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 13:17:48","lastModifiedDate":"2026-08-15 13:17:48","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74441","Ordinal":"1","Title":"usb: typec: ucsi: Fix race condition and ordering in port unregi","CVE":"CVE-2026-74441","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74441","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"usb: typec: ucsi: Fix race condition and ordering in port unregi"}]}}}