243 lines
13 KiB
JSON
243 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-97509",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-24T16:01:01.151Z",
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"datePublished": "2026-09-24T16:05:04.487Z",
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"dateUpdated": "2026-10-03T10:59:07.153Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-03T10:59:07.153Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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() → unregister_service() → 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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/thunderbolt/xdomain.c"
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],
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"versions": [
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{
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"version": "d1ff70241a275133e1a0258b7c23588b122276c8",
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"lessThan": "a4567e5380e4e46d0ea9a28d2d675e5c6f013d54",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d1ff70241a275133e1a0258b7c23588b122276c8",
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"lessThan": "daeaa6c7211d03ed061b0dd22a875fad9372b090",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d1ff70241a275133e1a0258b7c23588b122276c8",
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"lessThan": "cca72fe513f3d6b1279fe83483f8a8990adbe0c6",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d1ff70241a275133e1a0258b7c23588b122276c8",
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"lessThan": "57359bb31526c2f1bb0a7b9b69d8b8a6bd3f0e9f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d1ff70241a275133e1a0258b7c23588b122276c8",
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"lessThan": "8ab12d015884b8aa85ea7ed58c5a0bae4264fe60",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d1ff70241a275133e1a0258b7c23588b122276c8",
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"lessThan": "ea60ae6233ca0fc0d414e9c11f0d86c63b303fc7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d1ff70241a275133e1a0258b7c23588b122276c8",
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"lessThan": "8b4060998637f06975fceee9b73845d8672d411e",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/thunderbolt/xdomain.c"
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],
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"versions": [
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{
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"version": "4.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.266",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.217",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.189",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.158",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.111",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.53",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "5.10.266"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "5.15.217"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "6.1.189"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "6.6.158"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "6.12.111"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "6.18.53"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a4567e5380e4e46d0ea9a28d2d675e5c6f013d54"
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},
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{
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"url": "https://git.kernel.org/stable/c/daeaa6c7211d03ed061b0dd22a875fad9372b090"
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},
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{
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"url": "https://git.kernel.org/stable/c/cca72fe513f3d6b1279fe83483f8a8990adbe0c6"
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},
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{
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"url": "https://git.kernel.org/stable/c/57359bb31526c2f1bb0a7b9b69d8b8a6bd3f0e9f"
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},
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{
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"url": "https://git.kernel.org/stable/c/8ab12d015884b8aa85ea7ed58c5a0bae4264fe60"
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},
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{
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"url": "https://git.kernel.org/stable/c/ea60ae6233ca0fc0d414e9c11f0d86c63b303fc7"
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},
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{
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"url": "https://git.kernel.org/stable/c/8b4060998637f06975fceee9b73845d8672d411e"
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}
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],
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"title": "thunderbolt: Keep XDomain reference during the lifetime of a service",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |