cvelistv5 - cve-2022-49366

CVE-2022-49366 (GCVE-0-2022-49366)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:11 – Updated: 2025-10-01 19:46

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix reference count leak in smb_check_perm_dacl() The issue happens in a specific path in smb_check_perm_dacl(). When "id" and "uid" have the same value, the function simply jumps out of the loop without decrementing the reference count of the object "posix_acls", which is increased by get_acl() earlier. This may result in memory leaks. Fix it by decreasing the reference count of "posix_acls" before jumping to label "check_access_bits".

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-noinfo Not enough information

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/cf824b95c12a1abac…
	https://git.kernel.org/stable/c/248d71b440aef829f…
	https://git.kernel.org/stable/c/9758a6653c27867d8…
	https://git.kernel.org/stable/c/d21a580dafc69aa04…

Impacted products

Vendor

Product

Version

Linux

Affected: 777cad1604d68ed4379ec899d1f7d2f6a29f01f0 , < cf824b95c12a1abacadbc2d069931963221a3414 (git)
Affected: 777cad1604d68ed4379ec899d1f7d2f6a29f01f0 , < 248d71b440aef829f5cc5f6545ca113ef5062900 (git)
Affected: 777cad1604d68ed4379ec899d1f7d2f6a29f01f0 , < 9758a6653c27867d810de02b4e5697163dda9883 (git)
Affected: 777cad1604d68ed4379ec899d1f7d2f6a29f01f0 , < d21a580dafc69aa04f46e6099616146a536b0724 (git)

Linux

Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.47 , ≤ 5.15.* (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2022-49366

Vulnerability from fkie_nvd - Published: 2025-02-26 07:01 - Updated: 2025-10-01 20:16

Severity ?

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

Summary

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

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    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: se corrige la p\u00e9rdida de recuento de referencias en smb_check_perm_dacl() El problema ocurre en una ruta espec\u00edfica en smb_check_perm_dacl(). Cuando \"id\" y \"uid\" tienen el mismo valor, la funci\u00f3n simplemente salta del bucle sin disminuir el recuento de referencias del objeto \"posix_acls\", que se incrementa mediante get_acl() anteriormente. Esto puede provocar fugas de memoria. Arr\u00e9glelo disminuyendo el recuento de referencias de \"posix_acls\" antes de saltar a la etiqueta \"check_access_bits\"."
    }
  ],
  "id": "CVE-2022-49366",
  "lastModified": "2025-10-01T20:16:12.680",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-02-26T07:01:13.230",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-6QHR-H8JP-M2W8

Vulnerability from github – Published: 2025-04-14 21:32 – Updated: 2025-04-14 21:32

Details

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

ksmbd: fix reference count leak in smb_check_perm_dacl()

The issue happens in a specific path in smb_check_perm_dacl(). When "id" and "uid" have the same value, the function simply jumps out of the loop without decrementing the reference count of the object "posix_acls", which is increased by get_acl() earlier. This may result in memory leaks.

Fix it by decreasing the reference count of "posix_acls" before jumping to label "check_access_bits".

Severity ?

5.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2022-49366"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:13Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix reference count leak in smb_check_perm_dacl()\n\nThe issue happens in a specific path in smb_check_perm_dacl(). When\n\"id\" and \"uid\" have the same value, the function simply jumps out of\nthe loop without decrementing the reference count of the object\n\"posix_acls\", which is increased by get_acl() earlier. This may\nresult in memory leaks.\n\nFix it by decreasing the reference count of \"posix_acls\" before\njumping to label \"check_access_bits\".",
  "id": "GHSA-6qhr-h8jp-m2w8",
  "modified": "2025-04-14T21:32:22Z",
  "published": "2025-04-14T21:32:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49366"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724"
    }
  ],
  "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"
    }
  ]
}

WID-SEC-W-2025-0797

Vulnerability from csaf_certbund - Published: 2025-04-14 22:00 - Updated: 2025-04-14 22:00

Summary

Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung

Der Kernel stellt den Kern des Linux Betriebssystems dar.

Angriff

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme

- Linux

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Der Kernel stellt den Kern des Linux Betriebssystems dar.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2025-0797 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0797.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2025-0797 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-0797"
      },
      {
        "category": "external",
        "summary": "Github Security Advisory GHSA-6qhr-h8jp-m2w8) vom 2025-04-14",
        "url": "https://github.com/advisories/GHSA-6qhr-h8jp-m2w8"
      },
      {
        "category": "external",
        "summary": "Github Security Advisory GHSA-9crv-c24c-9g53 vom 2025-04-14",
        "url": "https://github.com/advisories/GHSA-9crv-c24c-9g53"
      },
      {
        "category": "external",
        "summary": "Github Security Advisory GHSA-fh2c-3j7r-hvgv vom 2025-04-14",
        "url": "https://github.com/advisories/GHSA-fh2c-3j7r-hvgv"
      },
      {
        "category": "external",
        "summary": "Github Security Advisory GHSA-fjrf-m4f9-hh77 vom 2025-04-14",
        "url": "https://github.com/advisories/GHSA-fjrf-m4f9-hh77"
      },
      {
        "category": "external",
        "summary": "Github Security Advisory GHSA-hvr9-mmhm-xx2r vom 2025-04-14",
        "url": "https://github.com/advisories/GHSA-hvr9-mmhm-xx2r"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Mehrere Schwachstellen erm\u00f6glichen Denial of Service",
    "tracking": {
      "current_release_date": "2025-04-14T22:00:00.000+00:00",
      "generator": {
        "date": "2025-04-15T10:05:55.317+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.12"
        }
      },
      "id": "WID-SEC-W-2025-0797",
      "initial_release_date": "2025-04-14T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2025-04-14T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source Linux Kernel",
            "product": {
              "name": "Open Source Linux Kernel",
              "product_id": "T006656",
              "product_identification_helper": {
                "cpe": "cpe:/o:linux:linux_kernel:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-49279",
      "product_status": {
        "known_affected": [
          "T006656"
        ]
      },
      "release_date": "2025-04-14T22:00:00.000+00:00",
      "title": "CVE-2022-49279"
    },
    {
      "cve": "CVE-2022-49300",
      "product_status": {
        "known_affected": [
          "T006656"
        ]
      },
      "release_date": "2025-04-14T22:00:00.000+00:00",
      "title": "CVE-2022-49300"
    },
    {
      "cve": "CVE-2022-49365",
      "product_status": {
        "known_affected": [
          "T006656"
        ]
      },
      "release_date": "2025-04-14T22:00:00.000+00:00",
      "title": "CVE-2022-49365"
    },
    {
      "cve": "CVE-2022-49366",
      "product_status": {
        "known_affected": [
          "T006656"
        ]
      },
      "release_date": "2025-04-14T22:00:00.000+00:00",
      "title": "CVE-2022-49366"
    },
    {
      "cve": "CVE-2022-49381",
      "product_status": {
        "known_affected": [
          "T006656"
        ]
      },
      "release_date": "2025-04-14T22:00:00.000+00:00",
      "title": "CVE-2022-49381"
    }
  ]
}

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

CVE-2022-49366 (GCVE-0-2022-49366)

FKIE_CVE-2022-49366

GHSA-6QHR-H8JP-M2W8

WID-SEC-W-2025-0797

Tags

Sightings

Nomenclature