CVE-2024-46742

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix potential null-ptr-deref of lease_ctx_info in smb2_open() null-ptr-deref will occur when (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) and parse_lease_state() return NULL. Fix this by check if 'lease_ctx_info' is NULL. Additionally, remove the redundant parentheses in parse_durable_handle_context().

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/07f384c5be1f8633b13f0a22616e227570450bc6	Patch
https://git.kernel.org/stable/c/3b692794b81f2ecad69a4adbba687f3836824ada	Patch
https://git.kernel.org/stable/c/4e8771a3666c8f216eefd6bd2fd50121c6c437db	Patch
https://git.kernel.org/stable/c/ec28c35029b7930f31117f9284874b63bea4f31b

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:6.11:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.11:rc4::::::

History

25 Apr 2025, 11:15

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/ec28c35029b7930f31117f9284874b63bea4f31b -

Information

Published : 2024-09-18 08:15

Updated : 2025-04-25 11:15

NVD link : CVE-2024-46742

Mitre link : CVE-2024-46742

CVE.ORG link : CVE-2024-46742

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2024-46742", "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": "2024-09-18T08:15:03.480", "references": [{"url": "https://git.kernel.org/stable/c/07f384c5be1f8633b13f0a22616e227570450bc6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3b692794b81f2ecad69a4adbba687f3836824ada", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4e8771a3666c8f216eefd6bd2fd50121c6c437db", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ec28c35029b7930f31117f9284874b63bea4f31b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "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\nsmb/server: fix potential null-ptr-deref of lease_ctx_info in smb2_open()\n\nnull-ptr-deref will occur when (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)\nand parse_lease_state() return NULL.\n\nFix this by check if 'lease_ctx_info' is NULL.\n\nAdditionally, remove the redundant parentheses in\nparse_durable_handle_context()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb/server: se corrige la posible eliminaci\u00f3n de referencia nula de lease_ctx_info en smb2_open(). La eliminaci\u00f3n de referencia nula de lease_ctx_info ocurrir\u00e1 cuando (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) y parse_lease_state() devuelvan NULL. Corrija esto verificando si 'lease_ctx_info' es NULL. Adem\u00e1s, elimine los par\u00e9ntesis redundantes en parse_durable_handle_context()."}], "lastModified": "2025-04-25T11:15:44.777", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D4954ED0-8229-4D57-B4B3-CB5154734977", "versionEndExcluding": "6.6.51"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ACDEE48C-137A-4731-90D0-A675865E1BED", "versionEndExcluding": "6.10.10", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8B3CE743-2126-47A3-8B7C-822B502CF119"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4DEB27E7-30AA-45CC-8934-B89263EF3551"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0005AEF-856E-47EB-BFE4-90C46899394D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39889A68-6D34-47A6-82FC-CD0BF23D6754"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}