{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97509", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.151Z", "datePublished": "2026-09-24T16:05:04.487Z", "dateUpdated": "2026-09-25T05:10:55.009Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-25T05:10:55.009Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Keep XDomain reference during the lifetime of a service\n\nThis is needed because we release the service ID in tb_service_release()\nand the ID array is owned by the parent XDomain."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - enumerate_services() runs from tb_xdomain_get_properties() after the peer's PROPERTIES_RESPONSE (tb_xdp_properties_request on the Thunderbolt/USB4 control channel) so tb_service children exist; the same peer's link-down hits tb_handle_hotplug() then tb_xdomain_unregister(). That is the TB fabric, not a routable IP protocol.\nAC:L - The peer controls both sides: property-block directories make enumerate_services() device_register() services without get_device(&xd->dev), then dropping the link runs tb_xdomain_unregister() \u2192 unregister_service() \u2192 device_del() put_device(parent) before tb_service_release() uses xd->service_ids. Advertise/unplug can be retried; no attacker-independent fault is required.\nPR:N - tb_domain_event_cb delivers TB_CFG_PKG_XDOMAIN_REQ/RESP to tb_xdomain_handle_request whenever tb_is_xdomain_enabled() (xdomain module_param defaults true, plus ACPI OSC). UUID/property handshake and enumerate_services() run with no device authorization or local credentials on the victim.\nUI:N - tb_xdomain_add() starts the handshake by itself; enumerate_services() and later tb_xdomain_unregister() (tb_domain_unregister_unplugged_xdomains after unplug) run from the connection-manager hotplug path with no victim mount, sysfs write, or authorization dialog.\nS:U - tb_service_release() ida_free()s the already-freed tb_xdomain.service_ids IDA in the host kernel; that does not cross a VM, IOMMU, or sandbox boundary.\nC:H - After tb_xdomain_release() kfree()s the XDomain, tb_service_release() calls tb_service_parent() (reads svc->dev.parent->type) and ida_free(&xd->service_ids). That slab UAF of struct tb_xdomain can be reclaimed for an arbitrary kernel read.\nI:H - ida_free() writes the IDA/XArray embedded in the already-freed tb_xdomain; a sprayed replacement object is a kernel write and control-flow hijack primitive, as in other parent-IDA lifetime UAFs.\nA:H - tb_service_release() on a kfree'd tb_xdomain (parent type-check or ida_free of destroyed service_ids) oopses or panics the host; the peer can repeat advertise-and-unplug cycles to take Thunderbolt down."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/thunderbolt/xdomain.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a4567e5380e4e46d0ea9a28d2d675e5c6f013d54", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "daeaa6c7211d03ed061b0dd22a875fad9372b090", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8ab12d015884b8aa85ea7ed58c5a0bae4264fe60", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ea60ae6233ca0fc0d414e9c11f0d86c63b303fc7", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8b4060998637f06975fceee9b73845d8672d411e", "status": "affected", "versionType": "git"}, {"version": "0", "lessThan": "5.10.266", "status": "affected", "versionType": "semver"}, {"version": "0", "lessThan": "5.15.217", "status": "affected", "versionType": "semver"}, {"version": "0", "lessThan": "6.12.111", "status": "affected", "versionType": "semver"}, {"version": "0", "lessThan": "6.18.53", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/thunderbolt/xdomain.c"], "versions": [{"version": "5.10.266", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.217", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.10.266"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.217"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a4567e5380e4e46d0ea9a28d2d675e5c6f013d54"}, {"url": "https://git.kernel.org/stable/c/daeaa6c7211d03ed061b0dd22a875fad9372b090"}, {"url": "https://git.kernel.org/stable/c/8ab12d015884b8aa85ea7ed58c5a0bae4264fe60"}, {"url": "https://git.kernel.org/stable/c/ea60ae6233ca0fc0d414e9c11f0d86c63b303fc7"}, {"url": "https://git.kernel.org/stable/c/8b4060998637f06975fceee9b73845d8672d411e"}], "title": "thunderbolt: Keep XDomain reference during the lifetime of a service", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/thunderbolt/xdomain.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a4567e5380e4e46d0ea9a28d2d675e5c6f013d54", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "daeaa6c7211d03ed061b0dd22a875fad9372b090", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "8ab12d015884b8aa85ea7ed58c5a0bae4264fe60", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "ea60ae6233ca0fc0d414e9c11f0d86c63b303fc7", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "8b4060998637f06975fceee9b73845d8672d411e", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "5.10.266", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "5.15.217", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "6.12.111", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "6.18.53", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/thunderbolt/xdomain.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.266", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.217", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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: Keep XDomain reference during the lifetime of a service\n\nThis is needed because we release the service ID in tb_service_release()\nand the ID array is owned by the parent XDomain."}], "id": "CVE-2026-97509", "lastModified": "2026-09-25T05:17:07.410", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-24T17:17:28.767", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ab12d015884b8aa85ea7ed58c5a0bae4264fe60"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b4060998637f06975fceee9b73845d8672d411e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a4567e5380e4e46d0ea9a28d2d675e5c6f013d54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/daeaa6c7211d03ed061b0dd22a875fad9372b090"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ea60ae6233ca0fc0d414e9c11f0d86c63b303fc7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,a4567e5380e4e46d0ea9a28d2d675e5c6f013d54)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,daeaa6c7211d03ed061b0dd22a875fad9372b090)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8ab12d015884b8aa85ea7ed58c5a0bae4264fe60)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,ea60ae6233ca0fc0d414e9c11f0d86c63b303fc7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8b4060998637f06975fceee9b73845d8672d411e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.10.266)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.15.217)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.111)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.53)"}}], "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": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.266,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.217,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "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": "2026-09-25T00:30:18.224861+00:00", "updated": "2026-09-26T01:45:03.051707+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}