CVE-2021-47075

In the Linux kernel, the following vulnerability has been resolved: nvmet: fix memory leak in nvmet_alloc_ctrl() When creating ctrl in nvmet_alloc_ctrl(), if the cntlid_min is larger than cntlid_max of the subsystem, and jumps to the "out_free_changed_ns_list" label, but the ctrl->sqs lack of be freed. Fix this by jumping to the "out_free_sqs" label.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4720f29acb3fe67aa8aa71e6b675b079d193aaeb	Patch
https://git.kernel.org/stable/c/afb680ed7ecbb7fd66ddb43650e9b533fd8b4b9a	Patch
https://git.kernel.org/stable/c/fec356a61aa3d3a66416b4321f1279e09e0f256f	Patch
https://git.kernel.org/stable/c/4720f29acb3fe67aa8aa71e6b675b079d193aaeb	Patch
https://git.kernel.org/stable/c/afb680ed7ecbb7fd66ddb43650e9b533fd8b4b9a	Patch
https://git.kernel.org/stable/c/fec356a61aa3d3a66416b4321f1279e09e0f256f	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.13:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.13:rc2::::::

History

No history.

Information

Published : 2024-03-01 22:15

Updated : 2025-03-19 16:09

NVD link : CVE-2021-47075

Mitre link : CVE-2021-47075

CVE.ORG link : CVE-2021-47075

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

{"id": "CVE-2021-47075", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2024-03-01T22:15:47.170", "references": [{"url": "https://git.kernel.org/stable/c/4720f29acb3fe67aa8aa71e6b675b079d193aaeb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/afb680ed7ecbb7fd66ddb43650e9b533fd8b4b9a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fec356a61aa3d3a66416b4321f1279e09e0f256f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4720f29acb3fe67aa8aa71e6b675b079d193aaeb", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/afb680ed7ecbb7fd66ddb43650e9b533fd8b4b9a", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/fec356a61aa3d3a66416b4321f1279e09e0f256f", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix memory leak in nvmet_alloc_ctrl()\n\nWhen creating ctrl in nvmet_alloc_ctrl(), if the cntlid_min is larger\nthan cntlid_max of the subsystem, and jumps to the\n\"out_free_changed_ns_list\" label, but the ctrl->sqs lack of be freed.\nFix this by jumping to the \"out_free_sqs\" label."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nvmet: repara la p\u00e9rdida de memoria en nvmet_alloc_ctrl() Al crear ctrl en nvmet_alloc_ctrl(), si cntlid_min es mayor que cntlid_max del subsistema y salta a la etiqueta \"out_free_changed_ns_list\", pero el ctrl->sqs falta para liberarse. Solucione este problema saltando a la etiqueta \"out_free_sqs\"."}], "lastModified": "2025-03-19T16:09:56.997", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A08070AB-8918-463D-B6C3-0E1A14F0D0CB", "versionEndExcluding": "5.10.40", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E8F2CE30-38B0-4716-B12B-A139B0F9C5C9", "versionEndExcluding": "5.12.7", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}