CVE-2026-98569 (GCVE-0-2026-98569)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-19 09:21
VLAI
Title
ip_gre: Reject enabling collect metadata through changelink
Summary
In the Linux kernel, the following vulnerability has been resolved: ip_gre: Reject enabling collect metadata through changelink ipgre_netlink_parms() can enable collect_md on an existing GRE, GRETAP or ERSPAN device. Unlike newlink, changelink does not enforce metadata tunnel uniqueness. Converting a non-metadata device can therefore replace the metadata receive entry for another device of the same type in the same netns. Deleting either device then clears the shared entry, breaking metadata receive lookup for the surviving device. If parameter validation fails after collect_md is set, deleting the modified device can also clear an entry it never owned. Reject enabling metadata mode in both changelink callbacks before any encapsulation or tunnel parameters are modified. Allow requests that repeat the metadata attribute on an existing metadata device.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6940 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2e15ea390e6f4466655066d97e22ec66870a042c , < c80315da84998b69b8829785a174b0bf72a81992 (git)
Affected: 2e15ea390e6f4466655066d97e22ec66870a042c , < cff8b520312e750ad38967c30128e1534cbf9484 (git)
Affected: 2e15ea390e6f4466655066d97e22ec66870a042c , < 1dc759571f3df14891175fc52527f7624ba01322 (git)
Affected: 2e15ea390e6f4466655066d97e22ec66870a042c , < da2e0cfbb620b199927a1e5b93b7cfde32083c7d (git)
Affected: 2e15ea390e6f4466655066d97e22ec66870a042c , < 2e54d53b65e296b4b4bdc2cdd3b2b58dfa8d8c5c (git)
Affected: 2e15ea390e6f4466655066d97e22ec66870a042c , < bdd41b96e814300c66222cf4e47ecb8aef995656 (git)
Affected: 2e15ea390e6f4466655066d97e22ec66870a042c , < 63c5e48d6f7f5722a48f63e13e961dc5302894ed (git)
Affected: 2e15ea390e6f4466655066d97e22ec66870a042c , < a3f315be9d30eeb6938d11fa17fd4b32d52f7c42 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.3
Unaffected: 0 , < 4.3 (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)
guessed Create a notification for this product.
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      "cve": "CVE-2026-98569",
      "id": "CVE-2026-98569",
      "initial_release_date": "2026-10-18T23:45:11Z",
      "product_status:known_affected": "344",
      "product_status:known_not_affected": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98569",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98569.json",
      "version": "3"
    }
  }
}



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