CVE-2026-74441

{"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 <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()."}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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": "7b63c680ff605f60f056e5f2c323f1a602aee182", "status": "affected", "version": "b9aa02ca39a49740926c2c450a1505a4a0f8954a", "versionType": "git"}, {"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": "6.1.*", "status": "unaffected", "version": "6.1.184", "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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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()."}], "id": "CVE-2026-74441", "lastModified": "2026-08-23T13:16:43.717", "metrics": {}, "published": "2026-08-15T13:17:48.643", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: usb: typec: ucsi: Fix race condition and ordering in port unregistration", "id": "2516993", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516993"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: typec: ucsi: Fix race condition and ordering in port unregistration\nA synchronization issue exists during port unregistration where pending\npartner work items can race against workqueue destruction, leading to\nuse-after-free conditions:\ncros_ec_ucsi cros_ec_ucsi.3.auto: error -ETIMEDOUT: PPM init failed\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nRIP: 0010:__queue_work+0x83/0x4a0\nCall Trace:\n<IRQ>\n__cfi_delayed_work_timer_fn+0x10/0x10\nrun_timer_softirq+0x3b6/0xbd0\nsched_clock_cpu+0xc/0x110\nirq_exit_rcu+0x18d/0x330\nfred_sysvec_apic_timer_interrupt+0x5e/0x80\nFix this by ensuring strict ordering and proper serialization during\nteardown:\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:\nOops: general protection fault, probably for non-canonical address\n0xdead000000000122: 0000 [#1] SMP NOPTI\nWorkqueue: cros_ec_ucsi.3.auto-con2 ucsi_poll_worker\nRIP: 0010:ucsi_poll_worker+0x65/0x1e0\nCall Trace:\n<TASK>\nprocess_scheduled_works+0x218/0x6d0\nworker_thread+0x188/0x3f0\n__cfi_worker_thread+0x10/0x10\nkthread+0x226/0x2a0\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().", "A flaw was found in the Linux kernel's USB Type-C UCSI driver. This vulnerability arises from a timing issue during the unregistration of USB Type-C ports, where certain operations can race against the destruction of internal work queues. A local attacker could exploit this race condition to trigger a use-after-free error, which involves accessing memory after it has been released. This can lead to system crashes (Denial of Service) and potentially allow for arbitrary code execution."], "name": "CVE-2026-74441", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74441\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74441\nhttps://lore.kernel.org/linux-cve-announce/2026081529-CVE-2026-74441-d92e@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b9aa02ca39a49740926c2c450a1505a4a0f8954a,07f8aaffee705e552c1f723ac8bf7eb137ad59c2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b9aa02ca39a49740926c2c450a1505a4a0f8954a,11483d80267db97fbe49f2df66385434256cc3b0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b9aa02ca39a49740926c2c450a1505a4a0f8954a,3f7b3728dd9011c915cbeaea77274ebe8366550d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b9aa02ca39a49740926c2c450a1505a4a0f8954a,bc7a0f721123ea260a42f1ded06dab844ba49434)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b9aa02ca39a49740926c2c450a1505a4a0f8954a,7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.151,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.103,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.44,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.8,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T13:45:03.196089+00:00", "updated": "2026-08-22T00:30:16.946655+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}