CVE-2021-47403 - Vulnerability Details - OpenCVE

ReportizFlow

In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix module reference leak A reference to the carrier module was taken on every open but was only released once when the final reference to the tty struct was dropped. Fix this by taking the module reference and initialising the tty driver data when installing the tty.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Linux	Linux Kernel

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/31398849b84ebae0d43a1cf379cb9895597f221a
https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666
https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c
https://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562
https://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69
https://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27
https://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6
https://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b
https://lore.kernel.org/linux-cve-announce/2024052150-CVE-2021-47403-b338@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47403
https://www.cve.org/CVERecord?id=CVE-2021-47403

History

Mon, 04 Nov 2024 12:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel:-:::::::*
Vendors & Products		Linux Linux linux Kernel
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-21T15:03:57.344Z

Updated: 2024-12-19T07:41:19.952Z

Reserved: 2024-05-21T14:58:30.816Z

Link: CVE-2021-47403

Vulnrichment

Updated: 2024-08-04T05:39:59.005Z

NVD

Status : Awaiting Analysis

Published: 2024-05-21T15:15:25.803

Modified: 2024-11-21T06:36:04.397

Link: CVE-2021-47403

Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2021-47403 - Bugzilla

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module was taken on every open but was only\nreleased once when the final reference to the tty struct was dropped.\n\nFix this by taking the module reference and initialising the tty driver\ndata when installing the tty."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T07:41:19.952Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47403", "state": "PUBLISHED", "dateUpdated": "2024-12-19T07:41:19.952Z", "dateReserved": "2024-05-21T14:58:30.816Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T15:03:57.344Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipack: ipoctal: fix module reference leak\n\nA reference to the carrier module was taken on every open but was only\nreleased once when the final reference to the tty struct was dropped.\n\nFix this by taking the module reference and initialising the tty driver\ndata when installing the tty."}, {"lang": "es", "value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipack: ipoctal: reparar fuga de referencia del m\u00f3dulo. Se tom\u00f3 una referencia al m\u00f3dulo portador en cada apertura, pero solo se public\u00f3 una vez cuando se elimin\u00f3 la referencia final a la estructura tty. Solucione este problema tomando la referencia del m\u00f3dulo e inicializando los datos del controlador tty al instalar el tty."}], "id": "CVE-2021-47403", "lastModified": "2024-11-21T06:36:04.397", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-05-21T15:15:25.803", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/31398849b84ebae0d43a1cf379cb9895597f221a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/31398849b84ebae0d43a1cf379cb9895597f221a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}