CVE-2025-40074

{
  "id": "CVE-2025-40074",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-10-28T12:15:41.943",
  "lastModified": "2026-10-19T21:10:00.160",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: start using dst_dev_rcu()\n\nChange icmpv4_xrlim_allow(), ip_defrag() to prevent possible UAF.\n\nChange ipmr_prepare_xmit(), ipmr_queue_fwd_xmit(), ip_mr_output(),\nipv4_neigh_lookup() to use lockdep enabled dst_dev_rcu()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nipv4: empezar a usar dst_dev_rcu()\n\nCambiar icmpv4_xrlim_allow(), ip_defrag() para prevenir posible UAF.\n\nCambiar ipmr_prepare_xmit(), ipmr_queue_fwd_xmit(), ip_mr_output(), ipv4_neigh_lookup() para usar dst_dev_rcu() con lockdep habilitado."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "net/ipv4/icmp.c",
            "net/ipv4/ip_fragment.c",
            "net/ipv4/ipmr.c",
            "net/ipv4/route.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
              "lessThan": "864155c164654110f68a17a63bd0339754790d67",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
              "lessThan": "e150f273cd8ed34ebc6d03758aad95c12fc58337",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
              "lessThan": "684efb2c86c887685f9aa65e1a21b3df6c1f822d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
              "lessThan": "923e0734c386984d45de508528a7a7ad91d791cc",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
              "lessThan": "6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "net/ipv4/icmp.c",
            "net/ipv4/ip_fragment.c",
            "net/ipv4/ipmr.c",
            "net/ipv4/route.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4.13",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "4.13",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.189",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.106",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.17.3",
              "lessThanOrEqual": "6.17.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/684efb2c86c887685f9aa65e1a21b3df6c1f822d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/864155c164654110f68a17a63bd0339754790d67",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/923e0734c386984d45de508528a7a7ad91d791cc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e150f273cd8ed34ebc6d03758aad95c12fc58337",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}