CVE & CISA-KEV Catalog

CVE-2023-54250

UNSCORED
NVD

Description

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.

How to fix

Remediation Available
linuxDebian
Fixed in:6.1.25-1CVE-2023-54250
Fixed in:6.1.25-1CVE-2023-54250
Fixed in:6.1.25-1CVE-2023-54250

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.17%probability of exploitation in 30 days
6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

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Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-31.