FKIE_CVE-2026-46037

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: validate reply type before using icmp_pointers Extended echo replies use ICMP_EXT_ECHOREPLY as the outbound reply type. That value is outside the range covered by icmp_pointers[], which only describes the traditional ICMP types up to NR_ICMP_TYPES. Avoid consulting icmp_pointers[] for reply types outside that range, and use array_index_nospec() for the remaining in-range lookup. Normal ICMP replies keep their existing behavior unchanged.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67bf002a2d7387a6312138210d0bd06e3cf4879b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/92e7c209036dcc0e8ffdf806fdfd3645b263bea5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc64a66e0b9ad937d3d49934242ee62b01ba9a94
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2178ff1c70ebfc2ab9651b230c58a34683db759
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: icmp: validate reply type before using icmp_pointers\n\nExtended echo replies use ICMP_EXT_ECHOREPLY as the outbound reply type.\nThat value is outside the range covered by icmp_pointers[], which only\ndescribes the traditional ICMP types up to NR_ICMP_TYPES.\n\nAvoid consulting icmp_pointers[] for reply types outside that range, and\nuse array_index_nospec() for the remaining in-range lookup. Normal ICMP\nreplies keep their existing behavior unchanged."
    }
  ],
  "id": "CVE-2026-46037",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:23.027",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/67bf002a2d7387a6312138210d0bd06e3cf4879b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/92e7c209036dcc0e8ffdf806fdfd3645b263bea5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bc64a66e0b9ad937d3d49934242ee62b01ba9a94"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c2178ff1c70ebfc2ab9651b230c58a34683db759"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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