Vulnerability-Lookup

GHSA-M9C8-445C-MWFR

Vulnerability from github – Published: 2025-09-18 15:30 – Updated: 2025-12-11 21:31

Details

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

mm/mempolicy: fix memory leak in set_mempolicy_home_node system call

When encountering any vma in the range with policy other than MPOL_BIND or MPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on the policy just allocated with mpol_dup().

This allows arbitrary users to leak kernel memory.

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-2022-50391"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-18T14:15:38Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mempolicy: fix memory leak in set_mempolicy_home_node system call\n\nWhen encountering any vma in the range with policy other than MPOL_BIND or\nMPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on\nthe policy just allocated with mpol_dup().\n\nThis allows arbitrary users to leak kernel memory.",
  "id": "GHSA-m9c8-445c-mwfr",
  "modified": "2025-12-11T21:31:26Z",
  "published": "2025-09-18T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50391"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ce4cc6d269ddc448a825955b495f662f5d9e153"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ca0eb6b2f3add8c5daefb726ce57dc95d103d33"
    }
  ],
  "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-2022-50391 (GCVE-0-2022-50391)

Vulnerability from cvelistv5 – Published: 2025-09-18 13:33 – Updated: 2026-01-14 18:53

Title

mm/mempolicy: fix memory leak in set_mempolicy_home_node system call

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: fix memory leak in set_mempolicy_home_node system call When encountering any vma in the range with policy other than MPOL_BIND or MPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on the policy just allocated with mpol_dup(). This allows arbitrary users to leak kernel memory.

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-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/4ca0eb6b2f3add8c5…
	https://git.kernel.org/stable/c/0ce4cc6d269ddc448…
	https://git.kernel.org/stable/c/38ce7c9bdfc228c14…

Impacted products

Vendor

Product

Version

Linux

Affected: c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0 , < 4ca0eb6b2f3add8c5daefb726ce57dc95d103d33 (git)
Affected: c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0 , < 0ce4cc6d269ddc448a825955b495f662f5d9e153 (git)
Affected: c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0 , < 38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76 (git)

Linux

Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 6.0.17 , ≤ 6.0.* (semver)
Unaffected: 6.1.3 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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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-2022-50391",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T18:50:30.804160Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-401",
                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T18:53:05.420Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/mempolicy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0",
              "versionType": "git"
            },
            {
              "lessThan": "0ce4cc6d269ddc448a825955b495f662f5d9e153",
              "status": "affected",
              "version": "c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0",
              "versionType": "git"
            },
            {
              "lessThan": "38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76",
              "status": "affected",
              "version": "c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0",
              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/mempolicy.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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            },
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              "status": "unaffected",
              "version": "6.1.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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            }
          ]
        }
      ],
      "cpeApplicability": [
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              "cpeMatch": [
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                },
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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          "lang": "en",
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-18T13:33:10.768Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/0ce4cc6d269ddc448a825955b495f662f5d9e153"
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        {
          "url": "https://git.kernel.org/stable/c/38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76"
        }
      ],
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50391",
    "datePublished": "2025-09-18T13:33:10.768Z",
    "dateReserved": "2025-09-17T14:53:06.998Z",
    "dateUpdated": "2026-01-14T18:53:05.420Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-M9C8-445C-MWFR

CVE-2022-50391 (GCVE-0-2022-50391)

Tags

Sightings

Nomenclature