CVE-2025-40074 (GCVE-0-2025-40074)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2025-12-01 06:17
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv4: start using dst_dev_rcu() Change icmpv4_xrlim_allow(), ip_defrag() to prevent possible UAF. Change ipmr_prepare_xmit(), ipmr_queue_fwd_xmit(), ip_mr_output(), ipv4_neigh_lookup() to use lockdep enabled dst_dev_rcu().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 , < 923e0734c386984d45de508528a7a7ad91d791cc (git)
Affected: 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 , < 6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8 (git)
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    Linux Linux Affected: 4.13
Unaffected: 0 , < 4.13 (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/icmp.c",
            "net/ipv4/ip_fragment.c",
            "net/ipv4/ipmr.c",
            "net/ipv4/route.c"
          ],
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              "version": "6.18",
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          "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()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-01T06:17:30.009Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/923e0734c386984d45de508528a7a7ad91d791cc"
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        {
          "url": "https://git.kernel.org/stable/c/6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8"
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      "title": "ipv4: start using dst_dev_rcu()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40074",
    "datePublished": "2025-10-28T11:48:41.202Z",
    "dateReserved": "2025-04-16T07:20:57.160Z",
    "dateUpdated": "2025-12-01T06:17:30.009Z",
    "state": "PUBLISHED"
  },
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  }
}


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