Vulnerability-Lookup

GHSA-HXJ2-JF3V-XP24

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46037"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:23Z",
    "severity": null
  },
  "details": "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": "GHSA-hxj2-jf3v-xp24",
  "modified": "2026-05-27T15:33:21Z",
  "published": "2026-05-27T15:33:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46037"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67bf002a2d7387a6312138210d0bd06e3cf4879b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92e7c209036dcc0e8ffdf806fdfd3645b263bea5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc64a66e0b9ad937d3d49934242ee62b01ba9a94"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c2178ff1c70ebfc2ab9651b230c58a34683db759"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46037 (GCVE-0-2026-46037)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:56 – Updated: 2026-05-27 12:56

Title

ipv4: icmp: validate reply type before using icmp_pointers

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.

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/92e7c209036dcc0e8…
https://git.kernel.org/stable/c/bc64a66e0b9ad937d…
https://git.kernel.org/stable/c/c2178ff1c70ebfc2a…
https://git.kernel.org/stable/c/d700c34a5d186b9ba…
https://git.kernel.org/stable/c/67bf002a2d7387a63…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < 92e7c209036dcc0e8ffdf806fdfd3645b263bea5 (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < bc64a66e0b9ad937d3d49934242ee62b01ba9a94 (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < c2178ff1c70ebfc2ab9651b230c58a34683db759 (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1 (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < 67bf002a2d7387a6312138210d0bd06e3cf4879b (git)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/icmp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "92e7c209036dcc0e8ffdf806fdfd3645b263bea5",
              "status": "affected",
              "version": "d329ea5bd8845f0b196bf41b18b6173340d6e0e4",
              "versionType": "git"
            },
            {
              "lessThan": "bc64a66e0b9ad937d3d49934242ee62b01ba9a94",
              "status": "affected",
              "version": "d329ea5bd8845f0b196bf41b18b6173340d6e0e4",
              "versionType": "git"
            },
            {
              "lessThan": "c2178ff1c70ebfc2ab9651b230c58a34683db759",
              "status": "affected",
              "version": "d329ea5bd8845f0b196bf41b18b6173340d6e0e4",
              "versionType": "git"
            },
            {
              "lessThan": "d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1",
              "status": "affected",
              "version": "d329ea5bd8845f0b196bf41b18b6173340d6e0e4",
              "versionType": "git"
            },
            {
              "lessThan": "67bf002a2d7387a6312138210d0bd06e3cf4879b",
              "status": "affected",
              "version": "d329ea5bd8845f0b196bf41b18b6173340d6e0e4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/icmp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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      "descriptions": [
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          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:56:47.795Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/92e7c209036dcc0e8ffdf806fdfd3645b263bea5"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc64a66e0b9ad937d3d49934242ee62b01ba9a94"
        },
        {
          "url": "https://git.kernel.org/stable/c/c2178ff1c70ebfc2ab9651b230c58a34683db759"
        },
        {
          "url": "https://git.kernel.org/stable/c/d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1"
        },
        {
          "url": "https://git.kernel.org/stable/c/67bf002a2d7387a6312138210d0bd06e3cf4879b"
        }
      ],
      "title": "ipv4: icmp: validate reply type before using icmp_pointers",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46037",
    "datePublished": "2026-05-27T12:56:47.795Z",
    "dateReserved": "2026-05-13T15:03:33.093Z",
    "dateUpdated": "2026-05-27T12:56:47.795Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-HXJ2-JF3V-XP24

CVE-2026-46037 (GCVE-0-2026-46037)

Tags

Sightings

Nomenclature