CVE-2023-38427

kernel: ksmbd: integer underflow and out-of-bounds read in deassemble_neg_contexts

Published Jul 17, 2023 CVSS 3.1 · 9.8 Critical EPSS 1.2% KEV · Not listed
Description
An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/smb2pdu.c in ksmbd has an integer underflow and out-of-bounds read in deassemble_neg_contexts.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-42244 An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/smb2pdu.c in ksmbd has an integer underflow and out-of-bounds read in deassemble_neg_contexts.
Ubuntu USN Ubuntu USN USN-6412-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6466-1 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-6725-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6725-2 Linux kernel (AWS) vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses
  • CWE-125

    Out-of-bounds Read

  • CWE-191

    Integer Underflow (Wrap or Wraparound)

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 5, 2025, 3:56 PM
Reserved
Jul 17, 2023, 12:00 AM
Status
Modified
Published
Jul 18, 2023, 12:15 AM
Modified
Jun 17, 2026, 6:10 AM
Severity
Important
Public date
Jul 17, 2023, 12:00 AM