CVE-2026-98691

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98691", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.364Z", "datePublished": "2026-10-18T15:46:15.299Z", "dateUpdated": "2026-10-19T09:24:01.186Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:24:01.186Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Tear down inactive DP tunnels when the domain is stopped\n\ntb_stop() only tears down DMA tunnels so a DP tunnel that is still\nwaiting for dprx_work to complete keeps that work queued while the\nrouters are removed and the control channel is stopped. The work only\nstops once the DPRX timeout has passed and because it requeues itself\nuntil then the flush_workqueue() in tb_domain_remove() won't wait for its\nfinal run. The callback then runs against a domain that is already torn\ndown. A reference to that domain is kept so the completion waiting for\nthat domain to disappear in unbind will block until the timeout is\neventually reached.\n\nTear down DP tunnels that are not active yet as well which also cancels\nthat work. Tunnels for displays that are already alive are untouched and\nkeep working."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/thunderbolt/tb.c"], "versions": [{"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "lessThan": "34a6e27c954e5bfc29fead17867c7155d54b6481", "status": "affected", "versionType": "git"}, {"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "lessThan": "cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa", "status": "affected", "versionType": "git"}, {"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "lessThan": "0b457c6733f73421a3fb03786f13d67c618b5119", "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/thunderbolt/tb.c"], "versions": [{"version": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "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": "6.14", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/34a6e27c954e5bfc29fead17867c7155d54b6481"}, {"url": "https://git.kernel.org/stable/c/cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa"}, {"url": "https://git.kernel.org/stable/c/0b457c6733f73421a3fb03786f13d67c618b5119"}], "title": "thunderbolt: Tear down inactive DP tunnels when the domain is stopped", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/thunderbolt/tb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "34a6e27c954e5bfc29fead17867c7155d54b6481", "status": "affected", "version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "versionType": "git"}, {"lessThan": "cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa", "status": "affected", "version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "versionType": "git"}, {"lessThan": "0b457c6733f73421a3fb03786f13d67c618b5119", "status": "affected", "version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/thunderbolt/tb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.14"}, {"lessThan": "6.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nthunderbolt: Tear down inactive DP tunnels when the domain is stopped\n\ntb_stop() only tears down DMA tunnels so a DP tunnel that is still\nwaiting for dprx_work to complete keeps that work queued while the\nrouters are removed and the control channel is stopped. The work only\nstops once the DPRX timeout has passed and because it requeues itself\nuntil then the flush_workqueue() in tb_domain_remove() won't wait for its\nfinal run. The callback then runs against a domain that is already torn\ndown. A reference to that domain is kept so the completion waiting for\nthat domain to disappear in unbind will block until the timeout is\neventually reached.\n\nTear down DP tunnels that are not active yet as well which also cancels\nthat work. Tunnels for displays that are already alive are untouched and\nkeep working."}], "id": "CVE-2026-98691", "lastModified": "2026-10-19T10:19:33.460", "metrics": {}, "published": "2026-10-18T16:17:22.523", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b457c6733f73421a3fb03786f13d67c618b5119"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/34a6e27c954e5bfc29fead17867c7155d54b6481"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: thunderbolt: Tear down inactive DP tunnels when the domain is stopped", "id": "2555146", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555146"}, "csaw": false, "cvss3": {"cvss3_base_score": "1.9", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-459", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nthunderbolt: Tear down inactive DP tunnels when the domain is stopped\ntb_stop() only tears down DMA tunnels so a DP tunnel that is still\nwaiting for dprx_work to complete keeps that work queued while the\nrouters are removed and the control channel is stopped. The work only\nstops once the DPRX timeout has passed and because it requeues itself\nuntil then the flush_workqueue() in tb_domain_remove() won't wait for its\nfinal run. The callback then runs against a domain that is already torn\ndown. A reference to that domain is kept so the completion waiting for\nthat domain to disappear in unbind will block until the timeout is\neventually reached.\nTear down DP tunnels that are not active yet as well which also cancels\nthat work. Tunnels for displays that are already alive are untouched and\nkeep working.", "A flaw was found in the Linux kernel's Thunderbolt subsystem. This vulnerability can lead to a Denial of Service (DoS) or system instability when a Thunderbolt device is disconnected or unbound. When a Thunderbolt domain is stopped, inactive DisplayPort (DP) tunnels are not properly torn down, allowing scheduled background tasks to continue running after the domain has been dismantled. A local privileged user or physically present attacker can trigger this flaw by unbinding or disconnecting a device during DisplayPort tunnel initialization, causing the domain removal process to hang or execute callbacks against torn-down resources."], "name": "CVE-2026-98691", "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": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98691\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98691\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98691.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d6d458d42e1e1544a18f37f1d5c840e00d5261b9,34a6e27c954e5bfc29fead17867c7155d54b6481)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d6d458d42e1e1544a18f37f1d5c840e00d5261b9,cbd2abb85ea32cafdcbaba218e13b18d8ed79bfa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d6d458d42e1e1544a18f37f1d5c840e00d5261b9,0b457c6733f73421a3fb03786f13d67c618b5119)"}}], "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": "6.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "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": "2026-10-18T22:30:13.854745+00:00", "updated": "2026-10-23T06:15:13.083984+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}