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seg6: Fix validation of nexthop addresses

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: seg6: Fix validation of nexthop addresses The kernel currently validates that the length of the provided nexthop address does not exceed the specified length. This can lead to the kernel reading uninitialized memory if user space provided a shorter length than the specified one. Fix by validating that the provided length exactly matches the specified one.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.15.186, 6.1.142, 6.12.34, 6.15.3, 6.6.94
CVEs
CVE-2025-38310
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 00:41 UTC · Revision 1

Source evidence

seg6: Fix validation of nexthop addresses

core-osv · Original source

Published 10 Jul 2025, 07:42 UTC

In the Linux kernel, the following vulnerability has been resolved: seg6: Fix validation of nexthop addresses The kernel currently validates that the length of the provided nexthop address does not exceed the specified length. This can lead to the kernel reading uninitialized memory if user space provided a shorter length than the specified one. Fix by validating that the provided length exactly matches the specified one.

osv:CVE-2025-38310

Kernel

Fixed versions: 5.15.186, 6.1.142, 6.6.94, 6.12.34, 6.15.3

Complete source record
{
  "id": "240a474ff2ffa85db812f2f5566eb2964a3c9c375fa207dfd8f3615267b6141d",
  "url": "https://osv.dev/vulnerability/CVE-2025-38310",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "seg6: Fix validation of nexthop addresses",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: seg6: Fix validation of nexthop addresses The kernel currently validates that the length of the provided nexthop address does not exceed the specified length. This can lead to the kernel reading uninitialized memory if user space provided a shorter length than the specified one. Fix by validating that the provided length exactly matches the specified one.",
    "evidence": "osv:CVE-2025-38310",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.186",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.142",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.94",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.34",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-38310",
      "aliases": [
        "CVE-2025-38310"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d1df6fd8a1d22d37cffa0075ab8ad423ce656777"
                },
                {
                  "fixed": "668923c474608dd9ebce0fbcc41bd8a27aa73dd6"
                },
                {
                  "fixed": "cef33a86bcb04ecf4dc10c56f6c42ee9d1c54bac"
                },
                {
                  "fixed": "d2507aeea45b3c5aa24d5daae0cf3db76895c0b7"
                },
                {
                  "fixed": "d5d9fd13bc19a3f9f2a951c5b6e934d84205789e"
                },
                {
                  "fixed": "cd4cd09810211fa23609c5c1018352e9e1cd8e5a"
                },
                {
                  "fixed": "7632fedb266d93ed0ed9f487133e6c6314a9b2d1"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38310.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.14.0"
                },
                {
                  "fixed": "5.15.186"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.142"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.94"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.34"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.15.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38310.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.469130194Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/668923c474608dd9ebce0fbcc41bd8a27aa73dd6",
        "https://git.kernel.org/stable/c/7632fedb266d93ed0ed9f487133e6c6314a9b2d1",
        "https://git.kernel.org/stable/c/cd4cd09810211fa23609c5c1018352e9e1cd8e5a",
        "https://git.kernel.org/stable/c/cef33a86bcb04ecf4dc10c56f6c42ee9d1c54bac",
        "https://git.kernel.org/stable/c/d2507aeea45b3c5aa24d5daae0cf3db76895c0b7",
        "https://git.kernel.org/stable/c/d5d9fd13bc19a3f9f2a951c5b6e934d84205789e",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38310.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38310",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38310.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38310",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499356,
  "published_at": "2025-07-10T07:42:19.338+00:00"
}