CVE-2026-98614 (GCVE-0-2026-98614)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:19 – Updated: 2026-10-19 09:22
VLAI
Title
sctp: avoid livelock while updating retransmit path
Summary
In 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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7063 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 , < 3fe624c3843694ab096fdb198526ba0c659febbe (git)
Affected: 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 , < 43410c1f2db53516e95ddd7e5b4b02f495b78121 (git)
Affected: 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 , < d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49 (git)
Affected: 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 , < 83b1a7f9e718828ef364a7b004254ebb2d0035fe (git)
Affected: 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 , < 173610fff55022a5ad1579fbcc7faa97467b58b7 (git)
Affected: 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 , < c9338057df1025f578fe7d0ff08bada87b8b838d (git)
Affected: 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 , < ddc34cc0834c873871e88b055ee6a260676efe97 (git)
Affected: 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 , < d2c31b837406395e576afeb25958c98e9938f3f6 (git)
Affected: 8ceaec02b17397d12719a282945abc95f8149d9f (git)
Affected: d2c2bdcdd8c5ce3d2a68aa3353ed1f340c3e500e (git)
Affected: 3.10.106 , < 3.11 (semver)
Affected: 3.12.71 , < 3.13 (semver)
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Linux Linux Affected: 3.14
Unaffected: 0 , < 3.14 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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            "value": "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."
          }
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        "metrics": {},
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        "vulnStatus": "Received"
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      "current_release_date": "2026-10-21T09:23:26+00:00",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: sctp: avoid livelock while updating retransmit path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98614.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-22T16:36:27Z",
      "cve": "CVE-2026-98614",
      "id": "CVE-2026-98614",
      "initial_release_date": "2026-10-18T23:44:40Z",
      "product_status:known_affected": "0",
      "product_status:known_not_affected": "348",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98614",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98614.json",
      "version": "3"
    }
  }
}



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