CVE-2023-54250

In the Linux kernel, the following vulnerability has been resolved: ksmbd: avoid out of bounds access in decode_preauth_ctxt() Confirm that the accessed pneg_ctxt->HashAlgorithms address sits within the SMB request boundary; deassemble_neg_contexts() only checks that the eight byte smb2_neg_context header + (client controlled) DataLength are within the packet boundary, which is insufficient. Checking for sizeof(struct smb2_preauth_neg_context) is overkill given that the type currently assumes SMB311_SALT_SIZE bytes of trailing Salt.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/39f5b4b313b445c980a2a295bed28228c29228ed
https://git.kernel.org/stable/c/a2f6ded41bec1d3be643c80a5eb97f1680309001
https://git.kernel.org/stable/c/e7067a446264a7514fa1cfaa4052cdb6803bc6a2
https://git.kernel.org/stable/c/f02edb9debbd36f44efa7567031485892c7df60d

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-30 13:16

Updated : 2026-08-04 11:16

NVD link : CVE-2023-54250

Mitre link : CVE-2023-54250

CVE.ORG link : CVE-2023-54250

JSON object : View

Products Affected

No product.

CWE

No CWE.

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