github - ghsa-7x5p-5275-mmvg

GHSA-7X5P-5275-MMVG

Vulnerability from github – Published: 2025-01-11 18:30 – Updated: 2025-01-16 15:32

Details

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

mm/page_alloc: don't call pfn_to_page() on possibly non-existent PFN in split_large_buddy()

In split_large_buddy(), we might call pfn_to_page() on a PFN that might not exist. In corner cases, such as when freeing the highest pageblock in the last memory section, this could result with CONFIG_SPARSEMEM && !CONFIG_SPARSEMEM_EXTREME in __pfn_to_section() returning NULL and and __section_mem_map_addr() dereferencing that NULL pointer.

Let's fix it, and avoid doing a pfn_to_page() call for the first iteration, where we already have the page.

So far this was found by code inspection, but let's just CC stable as the fix is easy.

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-2024-57881"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-11T16:15:24Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/page_alloc: don\u0027t call pfn_to_page() on possibly non-existent PFN in split_large_buddy()\n\nIn split_large_buddy(), we might call pfn_to_page() on a PFN that might\nnot exist.  In corner cases, such as when freeing the highest pageblock in\nthe last memory section, this could result with CONFIG_SPARSEMEM \u0026\u0026\n!CONFIG_SPARSEMEM_EXTREME in __pfn_to_section() returning NULL and and\n__section_mem_map_addr() dereferencing that NULL pointer.\n\nLet\u0027s fix it, and avoid doing a pfn_to_page() call for the first\niteration, where we already have the page.\n\nSo far this was found by code inspection, but let\u0027s just CC stable as the\nfix is easy.",
  "id": "GHSA-7x5p-5275-mmvg",
  "modified": "2025-01-16T15:32:09Z",
  "published": "2025-01-11T18:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57881"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4234ca9884bcae9e48ed38652d91696ad5cd591d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/faeec8e23c10bd30e8aa759a2eb3018dae00f924"
    }
  ],
  "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-2024-57881 (GCVE-0-2024-57881)

Vulnerability from cvelistv5 – Published: 2025-01-11 15:10 – Updated: 2025-10-01 19:57

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/page_alloc: don't call pfn_to_page() on possibly non-existent PFN in split_large_buddy() In split_large_buddy(), we might call pfn_to_page() on a PFN that might not exist. In corner cases, such as when freeing the highest pageblock in the last memory section, this could result with CONFIG_SPARSEMEM && !CONFIG_SPARSEMEM_EXTREME in __pfn_to_section() returning NULL and and __section_mem_map_addr() dereferencing that NULL pointer. Let's fix it, and avoid doing a pfn_to_page() call for the first iteration, where we already have the page. So far this was found by code inspection, but let's just CC stable as the fix is easy.

Severity ?

5.5 (Medium)


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

CWE

CWE-476 - NULL Pointer Dereference

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/4234ca9884bcae9e4…
	https://git.kernel.org/stable/c/faeec8e23c10bd30e…

Impacted products

Vendor

Product

Version

Linux

Affected: fd919a85cd55be5d00a6a7372071f44c8eafb825 , < 4234ca9884bcae9e48ed38652d91696ad5cd591d (git)
Affected: fd919a85cd55be5d00a6a7372071f44c8eafb825 , < faeec8e23c10bd30e8aa759a2eb3018dae00f924 (git)

Linux

Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.7 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-57881",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:54:46.665604Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T19:57:19.509Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/page_alloc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4234ca9884bcae9e48ed38652d91696ad5cd591d",
              "status": "affected",
              "version": "fd919a85cd55be5d00a6a7372071f44c8eafb825",
              "versionType": "git"
            },
            {
              "lessThan": "faeec8e23c10bd30e8aa759a2eb3018dae00f924",
              "status": "affected",
              "version": "fd919a85cd55be5d00a6a7372071f44c8eafb825",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/page_alloc.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.7",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/page_alloc: don\u0027t call pfn_to_page() on possibly non-existent PFN in split_large_buddy()\n\nIn split_large_buddy(), we might call pfn_to_page() on a PFN that might\nnot exist.  In corner cases, such as when freeing the highest pageblock in\nthe last memory section, this could result with CONFIG_SPARSEMEM \u0026\u0026\n!CONFIG_SPARSEMEM_EXTREME in __pfn_to_section() returning NULL and and\n__section_mem_map_addr() dereferencing that NULL pointer.\n\nLet\u0027s fix it, and avoid doing a pfn_to_page() call for the first\niteration, where we already have the page.\n\nSo far this was found by code inspection, but let\u0027s just CC stable as the\nfix is easy."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T10:05:46.069Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/4234ca9884bcae9e48ed38652d91696ad5cd591d"
        },
        {
          "url": "https://git.kernel.org/stable/c/faeec8e23c10bd30e8aa759a2eb3018dae00f924"
        }
      ],
      "title": "mm/page_alloc: don\u0027t call pfn_to_page() on possibly non-existent PFN in split_large_buddy()",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-57881",
    "datePublished": "2025-01-11T15:10:43.786Z",
    "dateReserved": "2025-01-11T14:45:42.023Z",
    "dateUpdated": "2025-10-01T19:57:19.509Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "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-7X5P-5275-MMVG

CVE-2024-57881 (GCVE-0-2024-57881)

Tags

Sightings

Nomenclature