CVE-2026-100079

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-100079", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.456Z", "datePublished": "2026-09-25T13:06:49.915Z", "dateUpdated": "2026-10-19T08:43:11.422Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:11.422Z"}, "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."}], "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/debugfs.c", "drivers/usb/typec/ucsi/ucsi.c"], "versions": [{"version": "df0383ffad64dc09954a60873c1e202b47f08d90", "lessThan": "fb7393519908befdc094be4ea913f582adbf2f7c", "status": "affected", "versionType": "git"}, {"version": "df0383ffad64dc09954a60873c1e202b47f08d90", "lessThan": "7177c215e69658adbd2f2fc5b72e14be9208d2ba", "status": "affected", "versionType": "git"}, {"version": "df0383ffad64dc09954a60873c1e202b47f08d90", "lessThan": "1f44d001620fd3caa30619a9bc73e9d15555408b", "status": "affected", "versionType": "git"}, {"version": "df0383ffad64dc09954a60873c1e202b47f08d90", "lessThan": "62efee351566321ad72a4abaf6eb7d972590585d", "status": "affected", "versionType": "git"}, {"version": "df0383ffad64dc09954a60873c1e202b47f08d90", "lessThan": "eed73a65ab609b79d53de88cccc34b36dfe753c4", "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/debugfs.c", "drivers/usb/typec/ucsi/ucsi.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.6", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.3"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E7B3238E-F896-4651-B55B-440AFF545ADF", "versionEndExcluding": "6.6.157", "versionStartIncluding": "6.6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A19EC695-B7E1-41E5-B0EA-E331EFDA98A9", "versionEndExcluding": "6.12.110", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0457F732-0EA6-47D3-A69C-17A43B435D23", "versionEndExcluding": "6.18.52", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BAFE7055-A65A-44F4-BD4B-BF067EAE17F3", "versionEndExcluding": "7.2.6", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2026-100079", "lastModified": "2026-10-19T09:17:06.757", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-09-25T14:17:15.000", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1f44d001620fd3caa30619a9bc73e9d15555408b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/62efee351566321ad72a4abaf6eb7d972590585d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7177c215e69658adbd2f2fc5b72e14be9208d2ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eed73a65ab609b79d53de88cccc34b36dfe753c4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fb7393519908befdc094be4ea913f582adbf2f7c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-772"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: usb: typec: ucsi: unregister debugfs entries on teardown", "id": "2541420", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541420"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-459", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: typec: ucsi: unregister debugfs entries on teardown\nucsi_register() creates per-instance debugfs entries, but\nucsi_unregister() keeps them around until ucsi_destroy().\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:\ndebugfs: 'pmic_glink.ucsi.0' already exists in 'ucsi'\nUnregister debugfs entries as part of ucsi_unregister(), and\nclear ucsi->debugfs after freeing it so repeated unregister\npaths remain safe.", "A flaw was found in the Linux kernel's USB Type-C Connector System Software Interface (UCSI) driver. This vulnerability can result in a Denial of Service (DoS) or system instability due to improper resource cleanup during device teardown. Debug filesystem (debugfs) entries created during registration are not removed when unregistering the interface, remaining active until the instance is destroyed. When a driver unregisters and re-registers the same interface across subsystem restarts, the kernel attempts to recreate existing entries, which can cause driver operational failures."], "name": "CVE-2026-100079", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-100079\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-100079\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-100079.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[df0383ffad64dc09954a60873c1e202b47f08d90,fb7393519908befdc094be4ea913f582adbf2f7c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[df0383ffad64dc09954a60873c1e202b47f08d90,7177c215e69658adbd2f2fc5b72e14be9208d2ba)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[df0383ffad64dc09954a60873c1e202b47f08d90,1f44d001620fd3caa30619a9bc73e9d15555408b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[df0383ffad64dc09954a60873c1e202b47f08d90,62efee351566321ad72a4abaf6eb7d972590585d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[df0383ffad64dc09954a60873c1e202b47f08d90,eed73a65ab609b79d53de88cccc34b36dfe753c4)"}}], "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": "semver", "value": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "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": "2026-09-25T16:45:08.754908+00:00", "updated": "2026-10-03T00:00:14.110022+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}