{"api_version":"1","generated_at":"2026-09-26T06:40:25+00:00","cve":"CVE-2026-100079","urls":{"html":"https://cve.report/CVE-2026-100079","api":"https://cve.report/api/cve/CVE-2026-100079.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-100079","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100079"},"summary":{"title":"usb: typec: ucsi: unregister debugfs entries on teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: unregister debugfs entries on teardown\n\nucsi_register() creates per-instance debugfs entries, but\nucsi_unregister() keeps them around until ucsi_destroy().\n\nDrivers like ucsi_glink that unregister/register the same UCSI\ninstance across remoteproc restart then try to create an already\nexisting debugfs directory and log:\n\n  debugfs: 'pmic_glink.ucsi.0' already exists in 'ucsi'\n\nUnregister debugfs entries as part of ucsi_unregister(), and\nclear ucsi->debugfs after freeing it so repeated unregister\npaths remain safe.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 14:17:15","updated_at":"2026-09-25 14:17:15"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/eed73a65ab609b79d53de88cccc34b36dfe753c4","name":"https://git.kernel.org/stable/c/eed73a65ab609b79d53de88cccc34b36dfe753c4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/62efee351566321ad72a4abaf6eb7d972590585d","name":"https://git.kernel.org/stable/c/62efee351566321ad72a4abaf6eb7d972590585d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7177c215e69658adbd2f2fc5b72e14be9208d2ba","name":"https://git.kernel.org/stable/c/7177c215e69658adbd2f2fc5b72e14be9208d2ba","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1f44d001620fd3caa30619a9bc73e9d15555408b","name":"https://git.kernel.org/stable/c/1f44d001620fd3caa30619a9bc73e9d15555408b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fb7393519908befdc094be4ea913f582adbf2f7c","name":"https://git.kernel.org/stable/c/fb7393519908befdc094be4ea913f582adbf2f7c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100079","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100079","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected df0383ffad64dc09954a60873c1e202b47f08d90 fb7393519908befdc094be4ea913f582adbf2f7c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected df0383ffad64dc09954a60873c1e202b47f08d90 7177c215e69658adbd2f2fc5b72e14be9208d2ba git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected df0383ffad64dc09954a60873c1e202b47f08d90 1f44d001620fd3caa30619a9bc73e9d15555408b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected df0383ffad64dc09954a60873c1e202b47f08d90 62efee351566321ad72a4abaf6eb7d972590585d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected df0383ffad64dc09954a60873c1e202b47f08d90 eed73a65ab609b79d53de88cccc34b36dfe753c4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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/debugfs.c","drivers/usb/typec/ucsi/ucsi.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"fb7393519908befdc094be4ea913f582adbf2f7c","status":"affected","version":"df0383ffad64dc09954a60873c1e202b47f08d90","versionType":"git"},{"lessThan":"7177c215e69658adbd2f2fc5b72e14be9208d2ba","status":"affected","version":"df0383ffad64dc09954a60873c1e202b47f08d90","versionType":"git"},{"lessThan":"1f44d001620fd3caa30619a9bc73e9d15555408b","status":"affected","version":"df0383ffad64dc09954a60873c1e202b47f08d90","versionType":"git"},{"lessThan":"62efee351566321ad72a4abaf6eb7d972590585d","status":"affected","version":"df0383ffad64dc09954a60873c1e202b47f08d90","versionType":"git"},{"lessThan":"eed73a65ab609b79d53de88cccc34b36dfe753c4","status":"affected","version":"df0383ffad64dc09954a60873c1e202b47f08d90","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/typec/ucsi/debugfs.c","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":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: unregister debugfs entries on teardown\n\nucsi_register() creates per-instance debugfs entries, but\nucsi_unregister() keeps them around until ucsi_destroy().\n\nDrivers like ucsi_glink that unregister/register the same UCSI\ninstance across remoteproc restart then try to create an already\nexisting debugfs directory and log:\n\n  debugfs: 'pmic_glink.ucsi.0' already exists in 'ucsi'\n\nUnregister debugfs entries as part of ucsi_unregister(), and\nclear ucsi->debugfs after freeing it so repeated unregister\npaths remain safe."}],"providerMetadata":{"dateUpdated":"2026-09-25T13:06:49.915Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/fb7393519908befdc094be4ea913f582adbf2f7c"},{"url":"https://git.kernel.org/stable/c/7177c215e69658adbd2f2fc5b72e14be9208d2ba"},{"url":"https://git.kernel.org/stable/c/1f44d001620fd3caa30619a9bc73e9d15555408b"},{"url":"https://git.kernel.org/stable/c/62efee351566321ad72a4abaf6eb7d972590585d"},{"url":"https://git.kernel.org/stable/c/eed73a65ab609b79d53de88cccc34b36dfe753c4"}],"title":"usb: typec: ucsi: unregister debugfs entries on teardown","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-100079","datePublished":"2026-09-25T13:06:49.915Z","dateReserved":"2026-09-25T10:25:14.456Z","dateUpdated":"2026-09-25T13:06:49.915Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 14:17:15","lastModifiedDate":"2026-09-25 14:17:15","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"100079","Ordinal":"1","Title":"usb: typec: ucsi: unregister debugfs entries on teardown","CVE":"CVE-2026-100079","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"100079","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: unregister debugfs entries on teardown\n\nucsi_register() creates per-instance debugfs entries, but\nucsi_unregister() keeps them around until ucsi_destroy().\n\nDrivers like ucsi_glink that unregister/register the same UCSI\ninstance across remoteproc restart then try to create an already\nexisting debugfs directory and log:\n\n  debugfs: 'pmic_glink.ucsi.0' already exists in 'ucsi'\n\nUnregister debugfs entries as part of ucsi_unregister(), and\nclear ucsi->debugfs after freeing it so repeated unregister\npaths remain safe.","Type":"Description","Title":"usb: typec: ucsi: unregister debugfs entries on teardown"}]}}}