{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80990", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.811Z", "datePublished": "2026-09-11T19:42:47.534Z", "dateUpdated": "2026-09-11T19:42:47.534Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:42:47.534Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: thunderbolt: Release the Rx HopID that was handed out on mismatch\n\ntb_xdomain_alloc_in_hopid() passes the wanted HopID to ida_alloc_range()\nas the lower bound, so a taken id is not an error there: the allocator\nreturns the next free one above it. tbnet_connected_work() asks for the\npeer's transmit path, treats any other id as a failure and returns\nwithout releasing what it got, so that allocation stays live for the rest\nof the XDomain connection with nothing left holding a reference to it.\n\nRelease the id when it is not the one we asked for, the same way the\nerror unwind at the end of the function releases the expected one."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/thunderbolt/main.c"], "versions": [{"version": "180b0689425c6fb2b35e69a3316ee38371a782df", "lessThan": "9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0", "status": "affected", "versionType": "git"}, {"version": "180b0689425c6fb2b35e69a3316ee38371a782df", "lessThan": "61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea", "status": "affected", "versionType": "git"}, {"version": "180b0689425c6fb2b35e69a3316ee38371a782df", "lessThan": "1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1", "status": "affected", "versionType": "git"}, {"version": "180b0689425c6fb2b35e69a3316ee38371a782df", "lessThan": "2f1463554d0561a2fead81e3888604e5c1125e29", "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/net/thunderbolt/main.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "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": "5.13", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0"}, {"url": "https://git.kernel.org/stable/c/61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea"}, {"url": "https://git.kernel.org/stable/c/1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1"}, {"url": "https://git.kernel.org/stable/c/2f1463554d0561a2fead81e3888604e5c1125e29"}], "title": "net: thunderbolt: Release the Rx HopID that was handed out on mismatch", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/thunderbolt/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0", "status": "affected", "version": "180b0689425c6fb2b35e69a3316ee38371a782df", "versionType": "git"}, {"lessThan": "61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea", "status": "affected", "version": "180b0689425c6fb2b35e69a3316ee38371a782df", "versionType": "git"}, {"lessThan": "1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1", "status": "affected", "version": "180b0689425c6fb2b35e69a3316ee38371a782df", "versionType": "git"}, {"lessThan": "2f1463554d0561a2fead81e3888604e5c1125e29", "status": "affected", "version": "180b0689425c6fb2b35e69a3316ee38371a782df", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/thunderbolt/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"lessThan": "5.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "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\nnet: thunderbolt: Release the Rx HopID that was handed out on mismatch\n\ntb_xdomain_alloc_in_hopid() passes the wanted HopID to ida_alloc_range()\nas the lower bound, so a taken id is not an error there: the allocator\nreturns the next free one above it. tbnet_connected_work() asks for the\npeer's transmit path, treats any other id as a failure and returns\nwithout releasing what it got, so that allocation stays live for the rest\nof the XDomain connection with nothing left holding a reference to it.\n\nRelease the id when it is not the one we asked for, the same way the\nerror unwind at the end of the function releases the expected one."}], "id": "CVE-2026-80990", "lastModified": "2026-09-11T20:19:05.867", "metrics": {}, "published": "2026-09-11T20:19:05.867", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2f1463554d0561a2fead81e3888604e5c1125e29"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Thunderbolt networking resource leak.", "id": "2532275", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532275"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.8", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's Thunderbolt networking driver. An issue in the `tbnet_connected_work()` function can lead to a resource leak. When an unexpected HopID is allocated during an XDomain connection, the ID is not properly released, causing it to remain active without a reference. This resource mismanagement could potentially lead to a Denial of Service (DoS) over time."], "name": "CVE-2026-80990", "public_date": "2026-09-11T19:42:47Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80990\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80990\nhttps://git.kernel.org/stable/c/1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1\nhttps://git.kernel.org/stable/c/2f1463554d0561a2fead81e3888604e5c1125e29\nhttps://git.kernel.org/stable/c/61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea\nhttps://git.kernel.org/stable/c/9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0"], "threat_severity": "Important"}

{"created": "2026-09-12T02:00:07.482795+00:00", "updated": "2026-09-12T02:00:07.482800+00:00", "vendors": []}