GHSA-HJHX-C2PG-C62C
Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-18 18:31In the Linux kernel, the following vulnerability has been resolved:
sctp: avoid livelock while updating retransmit path
sctp_assoc_update_retran_path() can loop forever when every remaining transport, including retran_path, is SCTP_UNCONFIRMED: the state check runs before the wraparound test, so the loop cannot observe that it has completed a full pass.
Fix this by considering a transport only when it is not UNCONFIRMED, then checking whether the walk has returned to retran_path. This makes the full-pass termination independent of the transport state while preserving the existing fallback selection semantics.
Also restore the NULL guard around the retran_path assignment. In the all-UNCONFIRMED case there is no eligible replacement transport, and installing NULL would leave later retransmit-path users and the debug print with a NULL path.
{
"affected": [],
"aliases": [
"CVE-2026-98614"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-18T16:17:14Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid livelock while updating retransmit path\n\nsctp_assoc_update_retran_path() can loop forever when every remaining\ntransport, including retran_path, is SCTP_UNCONFIRMED: the state check\nruns before the wraparound test, so the loop cannot observe that it has\ncompleted a full pass.\n\nFix this by considering a transport only when it is not UNCONFIRMED,\nthen checking whether the walk has returned to retran_path. This makes\nthe full-pass termination independent of the transport state while\npreserving the existing fallback selection semantics.\n\nAlso restore the NULL guard around the retran_path assignment. In the\nall-UNCONFIRMED case there is no eligible replacement transport, and\ninstalling NULL would leave later retransmit-path users and the debug\nprint with a NULL path.",
"id": "GHSA-hjhx-c2pg-c62c",
"modified": "2026-10-18T18:31:56Z",
"published": "2026-10-18T18:31:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98614"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/173610fff55022a5ad1579fbcc7faa97467b58b7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3fe624c3843694ab096fdb198526ba0c659febbe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/43410c1f2db53516e95ddd7e5b4b02f495b78121"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/83b1a7f9e718828ef364a7b004254ebb2d0035fe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c9338057df1025f578fe7d0ff08bada87b8b838d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d2c31b837406395e576afeb25958c98e9938f3f6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ddc34cc0834c873871e88b055ee6a260676efe97"
}
],
"schema_version": "1.4.0",
"severity": []
}
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