{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-74441", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.897Z", "datePublished": "2026-08-15T12:26:49.359Z", "dateUpdated": "2026-08-23T12:47:17.900Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:47:17.900Z" }, "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 \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 \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()." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/usb/typec/ucsi/ucsi.c" ], "versions": [ { "version": "b9aa02ca39a49740926c2c450a1505a4a0f8954a", "lessThan": "7b63c680ff605f60f056e5f2c323f1a602aee182", "status": "affected", "versionType": "git" }, { "version": "b9aa02ca39a49740926c2c450a1505a4a0f8954a", "lessThan": "07f8aaffee705e552c1f723ac8bf7eb137ad59c2", "status": "affected", "versionType": "git" }, { "version": "b9aa02ca39a49740926c2c450a1505a4a0f8954a", "lessThan": "11483d80267db97fbe49f2df66385434256cc3b0", "status": "affected", "versionType": "git" }, { "version": "b9aa02ca39a49740926c2c450a1505a4a0f8954a", "lessThan": "3f7b3728dd9011c915cbeaea77274ebe8366550d", "status": "affected", "versionType": "git" }, { "version": "b9aa02ca39a49740926c2c450a1505a4a0f8954a", "lessThan": "bc7a0f721123ea260a42f1ded06dab844ba49434", "status": "affected", "versionType": "git" }, { "version": "b9aa02ca39a49740926c2c450a1505a4a0f8954a", "lessThan": "7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/usb/typec/ucsi/ucsi.c" ], "versions": [ { "version": "5.16", "status": "affected" }, { "version": "0", "lessThan": "5.16", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.184", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.8", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.184" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.6.151" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.12.103" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.18.44" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "7.1.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/7b63c680ff605f60f056e5f2c323f1a602aee182" }, { "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" } } } }