CVE-2026-98690

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98690", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.364Z", "datePublished": "2026-10-18T15:46:13.825Z", "dateUpdated": "2026-10-19T09:24:00.240Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:24:00.240Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Fix domain reference leak when DPRX read is canceled\n\ntb_tunnel_one_dp() takes a domain reference which is only dropped once\ntb_dp_tunnel_active() has run on the work queue. If that work is\ncancelled that reference is leaked. Since\ncommit f5cc545f5969 (\"thunderbolt: Wait for tb_domain_release() to\ncomplete when driver is removed\") instead of just leaking memory this\nnow also blocks in the completion wait forever when unbinding the\ndriver.\n\nThis can be triggered whenever a DP tunnel is torn down before the DPRX\nread has completed, e.g. by unplugging within the timeout, and then\nunbinding the driver.\n\nThat reference only exists to keep the domain around while the DPRX work\nis scheduled so let the work itself own it: take it in tb_dp_dprx_start()\nand drop it in both places that end the work. Get/put are then paired\ninside the same file and it doesn't matter anymore if the callback ever\nruns."}], "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", "drivers/thunderbolt/tunnel.c"], "versions": [{"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "lessThan": "2f5893172fc6153f5f1ef34014ddbfcbf1f47f29", "status": "affected", "versionType": "git"}, {"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "lessThan": "7739b02129b2248f9a8054cfda924fa253f66a88", "status": "affected", "versionType": "git"}, {"version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "lessThan": "1fd1f67c94d30889377bba774f032ec15e8b9299", "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", "drivers/thunderbolt/tunnel.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/2f5893172fc6153f5f1ef34014ddbfcbf1f47f29"}, {"url": "https://git.kernel.org/stable/c/7739b02129b2248f9a8054cfda924fa253f66a88"}, {"url": "https://git.kernel.org/stable/c/1fd1f67c94d30889377bba774f032ec15e8b9299"}], "title": "thunderbolt: Fix domain reference leak when DPRX read is canceled", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/thunderbolt/tb.c", "drivers/thunderbolt/tunnel.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2f5893172fc6153f5f1ef34014ddbfcbf1f47f29", "status": "affected", "version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "versionType": "git"}, {"lessThan": "7739b02129b2248f9a8054cfda924fa253f66a88", "status": "affected", "version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "versionType": "git"}, {"lessThan": "1fd1f67c94d30889377bba774f032ec15e8b9299", "status": "affected", "version": "d6d458d42e1e1544a18f37f1d5c840e00d5261b9", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/thunderbolt/tb.c", "drivers/thunderbolt/tunnel.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: Fix domain reference leak when DPRX read is canceled\n\ntb_tunnel_one_dp() takes a domain reference which is only dropped once\ntb_dp_tunnel_active() has run on the work queue. If that work is\ncancelled that reference is leaked. Since\ncommit f5cc545f5969 (\"thunderbolt: Wait for tb_domain_release() to\ncomplete when driver is removed\") instead of just leaking memory this\nnow also blocks in the completion wait forever when unbinding the\ndriver.\n\nThis can be triggered whenever a DP tunnel is torn down before the DPRX\nread has completed, e.g. by unplugging within the timeout, and then\nunbinding the driver.\n\nThat reference only exists to keep the domain around while the DPRX work\nis scheduled so let the work itself own it: take it in tb_dp_dprx_start()\nand drop it in both places that end the work. Get/put are then paired\ninside the same file and it doesn't matter anymore if the callback ever\nruns."}], "id": "CVE-2026-98690", "lastModified": "2026-10-19T10:19:33.377", "metrics": {}, "published": "2026-10-18T16:17:22.423", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1fd1f67c94d30889377bba774f032ec15e8b9299"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2f5893172fc6153f5f1ef34014ddbfcbf1f47f29"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7739b02129b2248f9a8054cfda924fa253f66a88"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: thunderbolt: Fix domain reference leak when DPRX read is canceled", "id": "2555099", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555099"}, "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-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nthunderbolt: Fix domain reference leak when DPRX read is canceled\ntb_tunnel_one_dp() takes a domain reference which is only dropped once\ntb_dp_tunnel_active() has run on the work queue. If that work is\ncancelled that reference is leaked. Since\ncommit f5cc545f5969 (\"thunderbolt: Wait for tb_domain_release() to\ncomplete when driver is removed\") instead of just leaking memory this\nnow also blocks in the completion wait forever when unbinding the\ndriver.\nThis can be triggered whenever a DP tunnel is torn down before the DPRX\nread has completed, e.g. by unplugging within the timeout, and then\nunbinding the driver.\nThat reference only exists to keep the domain around while the DPRX work\nis scheduled so let the work itself own it: take it in tb_dp_dprx_start()\nand drop it in both places that end the work. Get/put are then paired\ninside the same file and it doesn't matter anymore if the callback ever\nruns.", "A flaw was found in the Linux kernel's Thunderbolt subsystem. This flaw allows a local user to cause a Denial of Service (DoS) by causing kernel cleanup operations to hang indefinitely. When a DisplayPort (DP) tunnel is disconnected before an internal read operation completes, the driver leaks an internal domain reference count. Consequently, subsequent attempts to unbind the driver block indefinitely while waiting for the resource to release."], "name": "CVE-2026-98690", "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-2026-98690\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98690\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98690.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d6d458d42e1e1544a18f37f1d5c840e00d5261b9,2f5893172fc6153f5f1ef34014ddbfcbf1f47f29)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d6d458d42e1e1544a18f37f1d5c840e00d5261b9,7739b02129b2248f9a8054cfda924fa253f66a88)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d6d458d42e1e1544a18f37f1d5c840e00d5261b9,1fd1f67c94d30889377bba774f032ec15e8b9299)"}}], "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": "2026-10-18T20:00:12.044020+00:00", "updated": "2026-10-23T05:15:14.414614+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}