{"api_version":"1","generated_at":"2026-08-02T17:40:03+00:00","cve":"CVE-2026-64329","urls":{"html":"https://cve.report/CVE-2026-64329","api":"https://cve.report/api/cve/CVE-2026-64329.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64329","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64329"},"summary":{"title":"usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove\n\nThe threaded IRQ handler ccg_irq_handler() calls ucsi_notify_common(),\nwhich on a connector-change event calls ucsi_connector_change() and\nschedules connector work.  In ucsi_ccg_remove(), ucsi_destroy() frees\nuc->ucsi (kfree) before free_irq() is called, so a handler invocation\nalready in flight may access the freed object after ucsi_destroy().\n\n  CPU 0 (remove)            | CPU 1 (threaded IRQ)\n    ucsi_destroy(uc->ucsi)  |   ccg_irq_handler()\n      kfree(ucsi) // FREE   |     ucsi_notify_common(uc->ucsi) // USE\n\nMove free_irq() before ucsi_destroy() in the remove path.  It is kept\nafter ucsi_unregister(): ucsi_unregister() cancels connector work whose\nhandler issues GET_CONNECTOR_STATUS through ucsi_send_command_common(),\nwhich waits for a completion that is signalled from the IRQ handler, so\nthe IRQ must stay active until that work has been cancelled.\n\nThe probe error path already orders free_irq() before ucsi_destroy().\n\nThis bug was found by static analysis.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:14","updated_at":"2026-07-25 10:17:14"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/1f0bdc2884b67de337215079bba166df0cdf4ac5","name":"https://git.kernel.org/stable/c/1f0bdc2884b67de337215079bba166df0cdf4ac5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dbb500bad02146b388041877574829016591ddc8","name":"https://git.kernel.org/stable/c/dbb500bad02146b388041877574829016591ddc8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f1adeb1ff8bef1467d6961059810795d02bbad5d","name":"https://git.kernel.org/stable/c/f1adeb1ff8bef1467d6961059810795d02bbad5d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/86c9ee928c4a370e323e432aaf8dca79c4ba7c85","name":"https://git.kernel.org/stable/c/86c9ee928c4a370e323e432aaf8dca79c4ba7c85","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f5c772b76bbd95de8be51cf849c6098f6af6fcf9","name":"https://git.kernel.org/stable/c/f5c772b76bbd95de8be51cf849c6098f6af6fcf9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/99381e762273a2410a3f0216000be32b013c0ea9","name":"https://git.kernel.org/stable/c/99381e762273a2410a3f0216000be32b013c0ea9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1a160076d3d0dcd4a98a4599ad96eec0790b099b","name":"https://git.kernel.org/stable/c/1a160076d3d0dcd4a98a4599ad96eec0790b099b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c32df11147822d22facee8fa30c2e8971d12f426","name":"https://git.kernel.org/stable/c/c32df11147822d22facee8fa30c2e8971d12f426","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64329","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64329","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 f1adeb1ff8bef1467d6961059810795d02bbad5d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 99381e762273a2410a3f0216000be32b013c0ea9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 1a160076d3d0dcd4a98a4599ad96eec0790b099b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 c32df11147822d22facee8fa30c2e8971d12f426 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 86c9ee928c4a370e323e432aaf8dca79c4ba7c85 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 f5c772b76bbd95de8be51cf849c6098f6af6fcf9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 dbb500bad02146b388041877574829016591ddc8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 1f0bdc2884b67de337215079bba166df0cdf4ac5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.5","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.261 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64329","cve":"CVE-2026-64329","epss":"0.001770000","percentile":"0.075020000","score_date":"2026-07-28","updated_at":"2026-07-29 00:05:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/typec/ucsi/ucsi_ccg.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f1adeb1ff8bef1467d6961059810795d02bbad5d","status":"affected","version":"e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2","versionType":"git"},{"lessThan":"99381e762273a2410a3f0216000be32b013c0ea9","status":"affected","version":"e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2","versionType":"git"},{"lessThan":"1a160076d3d0dcd4a98a4599ad96eec0790b099b","status":"affected","version":"e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2","versionType":"git"},{"lessThan":"c32df11147822d22facee8fa30c2e8971d12f426","status":"affected","version":"e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2","versionType":"git"},{"lessThan":"86c9ee928c4a370e323e432aaf8dca79c4ba7c85","status":"affected","version":"e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2","versionType":"git"},{"lessThan":"f5c772b76bbd95de8be51cf849c6098f6af6fcf9","status":"affected","version":"e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2","versionType":"git"},{"lessThan":"dbb500bad02146b388041877574829016591ddc8","status":"affected","version":"e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2","versionType":"git"},{"lessThan":"1f0bdc2884b67de337215079bba166df0cdf4ac5","status":"affected","version":"e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/typec/ucsi/ucsi_ccg.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.5"},{"lessThan":"5.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc3","versionStartIncluding":"5.5","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove\n\nThe threaded IRQ handler ccg_irq_handler() calls ucsi_notify_common(),\nwhich on a connector-change event calls ucsi_connector_change() and\nschedules connector work.  In ucsi_ccg_remove(), ucsi_destroy() frees\nuc->ucsi (kfree) before free_irq() is called, so a handler invocation\nalready in flight may access the freed object after ucsi_destroy().\n\n  CPU 0 (remove)            | CPU 1 (threaded IRQ)\n    ucsi_destroy(uc->ucsi)  |   ccg_irq_handler()\n      kfree(ucsi) // FREE   |     ucsi_notify_common(uc->ucsi) // USE\n\nMove free_irq() before ucsi_destroy() in the remove path.  It is kept\nafter ucsi_unregister(): ucsi_unregister() cancels connector work whose\nhandler issues GET_CONNECTOR_STATUS through ucsi_send_command_common(),\nwhich waits for a completion that is signalled from the IRQ handler, so\nthe IRQ must stay active until that work has been cancelled.\n\nThe probe error path already orders free_irq() before ucsi_destroy().\n\nThis bug was found by static analysis."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:49:57.098Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/f1adeb1ff8bef1467d6961059810795d02bbad5d"},{"url":"https://git.kernel.org/stable/c/99381e762273a2410a3f0216000be32b013c0ea9"},{"url":"https://git.kernel.org/stable/c/1a160076d3d0dcd4a98a4599ad96eec0790b099b"},{"url":"https://git.kernel.org/stable/c/c32df11147822d22facee8fa30c2e8971d12f426"},{"url":"https://git.kernel.org/stable/c/86c9ee928c4a370e323e432aaf8dca79c4ba7c85"},{"url":"https://git.kernel.org/stable/c/f5c772b76bbd95de8be51cf849c6098f6af6fcf9"},{"url":"https://git.kernel.org/stable/c/dbb500bad02146b388041877574829016591ddc8"},{"url":"https://git.kernel.org/stable/c/1f0bdc2884b67de337215079bba166df0cdf4ac5"}],"title":"usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64329","datePublished":"2026-07-25T08:49:57.098Z","dateReserved":"2026-07-19T15:36:31.780Z","dateUpdated":"2026-07-25T08:49:57.098Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:14","lastModifiedDate":"2026-07-25 10:17:14","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64329","Ordinal":"1","Title":"usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove","CVE":"CVE-2026-64329","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64329","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove\n\nThe threaded IRQ handler ccg_irq_handler() calls ucsi_notify_common(),\nwhich on a connector-change event calls ucsi_connector_change() and\nschedules connector work.  In ucsi_ccg_remove(), ucsi_destroy() frees\nuc->ucsi (kfree) before free_irq() is called, so a handler invocation\nalready in flight may access the freed object after ucsi_destroy().\n\n  CPU 0 (remove)            | CPU 1 (threaded IRQ)\n    ucsi_destroy(uc->ucsi)  |   ccg_irq_handler()\n      kfree(ucsi) // FREE   |     ucsi_notify_common(uc->ucsi) // USE\n\nMove free_irq() before ucsi_destroy() in the remove path.  It is kept\nafter ucsi_unregister(): ucsi_unregister() cancels connector work whose\nhandler issues GET_CONNECTOR_STATUS through ucsi_send_command_common(),\nwhich waits for a completion that is signalled from the IRQ handler, so\nthe IRQ must stay active until that work has been cancelled.\n\nThe probe error path already orders free_irq() before ucsi_destroy().\n\nThis bug was found by static analysis.","Type":"Description","Title":"usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove"}]}}}