GHSA-33RP-CH35-2JF6
Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-10-30 15:33In the Linux kernel, the following vulnerability has been resolved:
net: thunderbolt: Release the Rx HopID that was handed out on mismatch
tb_xdomain_alloc_in_hopid() passes the wanted HopID to ida_alloc_range() as the lower bound, so a taken id is not an error there: the allocator returns the next free one above it. tbnet_connected_work() asks for the peer's transmit path, treats any other id as a failure and returns without releasing what it got, so that allocation stays live for the rest of the XDomain connection with nothing left holding a reference to it.
Release the id when it is not the one we asked for, the same way the error unwind at the end of the function releases the expected one.
{
"affected": [],
"aliases": [
"CVE-2026-80990"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-11T20:19:05Z",
"severity": null
},
"details": "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\u0027s 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": "GHSA-33rp-ch35-2jf6",
"modified": "2026-10-30T15:33:17Z",
"published": "2026-09-11T21:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80990"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f1463554d0561a2fead81e3888604e5c1125e29"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/47981eb66461ba4e74bbaea0f139adaaeb3991e9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b098f01638a142afbb1e00b323e2fc40f237907a"
}
],
"schema_version": "1.4.0",
"severity": []
}
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