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CVE-2023-54250

In the Linux kernel, the following vulnerability has been resolved: ksmbd: avoid out of bounds access in decode_preauth_ctxt() Confirm tha

CVSS

8.2

Alto

EPSS

0.2%

p7

KEV

Exploit Today

2

0-100

Publicado: 30 dic 2025 · Última mod.: 4 ago 2026

EPSS · 30d
0.2%EPSS · 30 días0.2%
2026-07-072026-08-04
Descripción técnica

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.

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