CVE-2022-49822

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Si la configuraci\u00f3n de Tlink falla, se pierden las conexiones y se produce una fuga de referencia del m\u00f3dulo, ya que el kthread de cifsd no finaliza. Tambi\u00e9n se filtra la informaci\u00f3n de fscache, y en el siguiente montaje con fsc, se mostrar\u00e1n los siguientes errores: CIFS: La clave del volumen de cach\u00e9 ya est\u00e1 en uso (cifs,127.0.0.1:445,TEST). Revisemos el resultado de la configuraci\u00f3n de Tlink y realicemos una limpieza."}], "id": "CVE-2022-49822", "lastModified": "2026-11-05T20:17:14.307", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-49822", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T19:49:38.156388Z", "version": "2.0.3"}}]}, "published": "2025-05-01T15:16:05.623", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0a087842d10b5daa123ee5291e386cdd78413705"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1dcdf5f5b2137185cbdd5385f29949ab3da4f00c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/775d6625f96b26b90b9be9164b855ea2c471c0e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a9059e338fc000c0b87d8cf29e93c74fd703212e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: cifs: Fix connections leak when tlink setup failed", "id": "2363431", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363431"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncifs: Fix connections leak when tlink setup failed\nIf the tlink setup failed, lost to put the connections, then\nthe module refcnt leak since the cifsd kthread not exit.\nAlso leak the fscache info, and for next mount with fsc, it will\nprint the follow errors:\nCIFS: Cache volume key already in use (cifs,127.0.0.1:445,TEST)\nLet's check the result of tlink setup, and do some cleanup."], "name": "CVE-2022-49822", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49822\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49822\nhttps://lore.kernel.org/linux-cve-announce/2025050133-CVE-2022-49822-1913@gregkh/T"], "statement": "A resource leak was identified in the CIFS filesystem module due to missing cleanup when tlink setup fails during mount. This causes leaked module references, persistent kernel threads, and leftover fscache entries that may block subsequent mounts.", "threat_severity": "Moderate"}

{"created": "2025-06-24T09:51:40.016960+00:00", "updated": "2025-06-24T09:51:40.017016+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}