CVE-2024-43821

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix a possible null pointer dereference In function lpfc_xcvr_data_show, the memory allocation with kmalloc might fail, thereby making rdp_context a null pointer. In the following context and functions that use this pointer, there are dereferencing operations, leading to null pointer dereference. To fix this issue, a null pointer check should be added. If it is null, use scnprintf to notify the user and return len.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/45b2a23e00d448a9e6d1f371ca3a4d4b073fe78c	Patch
https://git.kernel.org/stable/c/57600a7dd2b52c904f7c8d2cac0fd8c23868e680	Patch
https://git.kernel.org/stable/c/5e0bf3e8aec2cbc51123f84b29aaacbd91fc56fa	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-08-17 10:15

Updated : 2024-09-03 17:49

NVD link : CVE-2024-43821

Mitre link : CVE-2024-43821

CVE.ORG link : CVE-2024-43821

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2024-43821", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-08-17T10:15:08.277", "references": [{"url": "https://git.kernel.org/stable/c/45b2a23e00d448a9e6d1f371ca3a4d4b073fe78c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/57600a7dd2b52c904f7c8d2cac0fd8c23868e680", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5e0bf3e8aec2cbc51123f84b29aaacbd91fc56fa", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: lpfc: Fix a possible null pointer dereference\n\nIn function lpfc_xcvr_data_show, the memory allocation with kmalloc might\nfail, thereby making rdp_context a null pointer. In the following context\nand functions that use this pointer, there are dereferencing operations,\nleading to null pointer dereference.\n\nTo fix this issue, a null pointer check should be added. If it is null,\nuse scnprintf to notify the user and return len."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: lpfc: corrige una posible desreferencia de puntero nulo En la funci\u00f3n lpfc_xcvr_data_show, la asignaci\u00f3n de memoria con kmalloc podr\u00eda fallar, convirtiendo as\u00ed a rdp_context en un puntero nulo. En el siguiente contexto y funciones que utilizan este puntero, hay operaciones de desreferenciaci\u00f3n que conducen a una desreferencia del puntero nulo. Para solucionar este problema, se debe agregar una verificaci\u00f3n de puntero nulo. Si es nulo, use scnprintf para notificar al usuario y devolver len."}], "lastModified": "2024-09-03T17:49:54.280", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CC912330-6B41-4C6B-99AF-F3857FBACB6A", "versionEndExcluding": "6.6.44", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92D388F2-1EAF-4CFA-AC06-5B26D762EA7D", "versionEndExcluding": "6.10.3", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}