github - ghsa-2885-grqh-2673

GHSA-2885-GRQH-2673

Vulnerability from github – Published: 2025-01-23 15:31 – Updated: 2025-10-15 15:30

Details

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_set_pipapo: fix initial map fill

The initial buffer has to be inited to all-ones, but it must restrict it to the size of the first field, not the total field size.

After each round in the map search step, the result and the fill map are swapped, so if we have a set where f->bsize of the first element is smaller than m->bsize_max, those one-bits are leaked into future rounds result map.

This makes pipapo find an incorrect matching results for sets where first field size is not the largest.

Followup patch adds a test case to nft_concat_range.sh selftest script.

Thanks to Stefano Brivio for pointing out that we need to zero out the remainder explicitly, only correcting memset() argument isn't enough.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-57947"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-23T14:15:25Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_set_pipapo: fix initial map fill\n\nThe initial buffer has to be inited to all-ones, but it must restrict\nit to the size of the first field, not the total field size.\n\nAfter each round in the map search step, the result and the fill map\nare swapped, so if we have a set where f-\u003ebsize of the first element\nis smaller than m-\u003ebsize_max, those one-bits are leaked into future\nrounds result map.\n\nThis makes pipapo find an incorrect matching results for sets where\nfirst field size is not the largest.\n\nFollowup patch adds a test case to nft_concat_range.sh selftest script.\n\nThanks to Stefano Brivio for pointing out that we need to zero out\nthe remainder explicitly, only correcting memset() argument isn\u0027t enough.",
  "id": "GHSA-2885-grqh-2673",
  "modified": "2025-10-15T15:30:21Z",
  "published": "2025-01-23T15:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57947"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69b6a67f7052905e928d75a0c5871de50e686986"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/791a615b7ad2258c560f91852be54b0480837c93"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8058c88ac0df21239daee54b5934d5c80ca9685f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/957a4d1c4c5849e4515c9fb4db21bf85318103dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9625c46ce6fd4f922595a4b32b1de5066d70464f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-57947 (GCVE-0-2024-57947)

Vulnerability from cvelistv5 – Published: 2025-01-23 13:54 – Updated: 2025-05-04 10:07

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_set_pipapo: fix initial map fill The initial buffer has to be inited to all-ones, but it must restrict it to the size of the first field, not the total field size. After each round in the map search step, the result and the fill map are swapped, so if we have a set where f->bsize of the first element is smaller than m->bsize_max, those one-bits are leaked into future rounds result map. This makes pipapo find an incorrect matching results for sets where first field size is not the largest. Followup patch adds a test case to nft_concat_range.sh selftest script. Thanks to Stefano Brivio for pointing out that we need to zero out the remainder explicitly, only correcting memset() argument isn't enough.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/957a4d1c4c5849e45…
	https://git.kernel.org/stable/c/9625c46ce6fd4f922…
	https://git.kernel.org/stable/c/69b6a67f7052905e9…
	https://git.kernel.org/stable/c/8058c88ac0df21239…
	https://git.kernel.org/stable/c/791a615b7ad2258c5…

Impacted products

Vendor

Product

Version

Linux

Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 957a4d1c4c5849e4515c9fb4db21bf85318103dc (git)
Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 9625c46ce6fd4f922595a4b32b1de5066d70464f (git)
Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 69b6a67f7052905e928d75a0c5871de50e686986 (git)
Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 8058c88ac0df21239daee54b5934d5c80ca9685f (git)
Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 791a615b7ad2258c560f91852be54b0480837c93 (git)

Linux

Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.15.165 , ≤ 5.15.* (semver)
Unaffected: 6.1.103 , ≤ 6.1.* (semver)
Unaffected: 6.6.44 , ≤ 6.6.* (semver)
Unaffected: 6.10.3 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nft_set_pipapo.c",
            "net/netfilter/nft_set_pipapo.h",
            "net/netfilter/nft_set_pipapo_avx2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
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              "versionType": "git"
            },
            {
              "lessThan": "69b6a67f7052905e928d75a0c5871de50e686986",
              "status": "affected",
              "version": "3c4287f62044a90e73a561aa05fc46e62da173da",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "3c4287f62044a90e73a561aa05fc46e62da173da",
              "versionType": "git"
            },
            {
              "lessThan": "791a615b7ad2258c560f91852be54b0480837c93",
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              "versionType": "git"
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        {
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          "product": "Linux",
          "programFiles": [
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            "net/netfilter/nft_set_pipapo.h",
            "net/netfilter/nft_set_pipapo_avx2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                },
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              "operator": "OR"
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          "lang": "en",
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        }
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        },
        {
          "url": "https://git.kernel.org/stable/c/791a615b7ad2258c560f91852be54b0480837c93"
        }
      ],
      "title": "netfilter: nf_set_pipapo: fix initial map fill",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-57947",
    "datePublished": "2025-01-23T13:54:20.267Z",
    "dateReserved": "2025-01-19T11:50:08.380Z",
    "dateUpdated": "2025-05-04T10:07:17.250Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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-2885-GRQH-2673

CVE-2024-57947 (GCVE-0-2024-57947)

Tags

Sightings

Nomenclature