github - ghsa-rrh5-rfhq-mff2

ghsa-rrh5-rfhq-mff2

Vulnerability from github

Published

2024-10-21 18:30

Modified

2024-11-13 15:31

Severity ?

4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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

mm/gup: fix memfd_pin_folios alloc race panic

If memfd_pin_folios tries to create a hugetlb page, but someone else already did, then folio gets the value -EEXIST here:

    folio = memfd_alloc_folio(memfd, start_idx);
    if (IS_ERR(folio)) {
            ret = PTR_ERR(folio);
            if (ret != -EEXIST)
                    goto err;

then on the next trip through the "while start_idx" loop we panic here:

    if (folio) {
            folio_put(folio);

To fix, set the folio to NULL on error.

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2024-49872"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:08Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/gup: fix memfd_pin_folios alloc race panic\n\nIf memfd_pin_folios tries to create a hugetlb page, but someone else\nalready did, then folio gets the value -EEXIST here:\n\n        folio = memfd_alloc_folio(memfd, start_idx);\n        if (IS_ERR(folio)) {\n                ret = PTR_ERR(folio);\n                if (ret != -EEXIST)\n                        goto err;\n\nthen on the next trip through the \"while start_idx\" loop we panic here:\n\n        if (folio) {\n                folio_put(folio);\n\nTo fix, set the folio to NULL on error.",
  "id": "GHSA-rrh5-rfhq-mff2",
  "modified": "2024-11-13T15:31:36Z",
  "published": "2024-10-21T18:30:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49872"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce645b9fdc78ec5d28067286e92871ddae6817d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e28f39b359c0cfdcc011603e51187085a5f1e5e3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-49872

Vulnerability from cvelistv5

Published

2024-10-21 18:01

Modified

2024-12-19 09:27

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/gup: fix memfd_pin_folios alloc race panic If memfd_pin_folios tries to create a hugetlb page, but someone else already did, then folio gets the value -EEXIST here: folio = memfd_alloc_folio(memfd, start_idx); if (IS_ERR(folio)) { ret = PTR_ERR(folio); if (ret != -EEXIST) goto err; then on the next trip through the "while start_idx" loop we panic here: if (folio) { folio_put(folio); To fix, set the folio to NULL on error.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/e28f39b359c0cfdcc011603e51187085a5f1e5e3
	https://git.kernel.org/stable/c/ce645b9fdc78ec5d28067286e92871ddae6817d5

Impacted products

Vendor

Product

Version

▼

Linux

Version: 89c1905d9c140372b7f50ef48f42378cf85d9bc5
Version: 89c1905d9c140372b7f50ef48f42378cf85d9bc5

Linux

Version: 6.11

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49872",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:46:48.511178Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:48:51.785Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/gup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "lessThan": "ce645b9fdc78ec5d28067286e92871ddae6817d5",
              "status": "affected",
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              "versionType": "git"
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          ]
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        {
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/gup: fix memfd_pin_folios alloc race panic\n\nIf memfd_pin_folios tries to create a hugetlb page, but someone else\nalready did, then folio gets the value -EEXIST here:\n\n        folio = memfd_alloc_folio(memfd, start_idx);\n        if (IS_ERR(folio)) {\n                ret = PTR_ERR(folio);\n                if (ret != -EEXIST)\n                        goto err;\n\nthen on the next trip through the \"while start_idx\" loop we panic here:\n\n        if (folio) {\n                folio_put(folio);\n\nTo fix, set the folio to NULL on error."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:27:59.819Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/ce645b9fdc78ec5d28067286e92871ddae6817d5"
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      "title": "mm/gup: fix memfd_pin_folios alloc race panic",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49872",
    "datePublished": "2024-10-21T18:01:13.369Z",
    "dateReserved": "2024-10-21T12:17:06.020Z",
    "dateUpdated": "2024-12-19T09:27:59.819Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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