CVE-2023-32255

Medium

A flaw was found in the Linux kernel's ksmbd component. A memory leak can occur if a client sends a session setup request with an unknown NTLMSSP message type, potentially leading to resource exhaustion.

Package Linux Kernel
Published 2025-08-02
Last modified 2026-04-15
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

5.3

out of 10
Medium
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness type

CWE-772

CVE-2023-32255 is a Missing Release of Resource after Effective Lifetime vulnerability

What is Missing Release of Resource after Effective Lifetime?

The product does not release a resource after its effective lifetime has ended. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-32255 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2023-32255?

    CVE-2023-32255 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10 , classified as a Missing Release of Resource after Effective Lifetime flaw (CWE-772) . CVE-2023-32255 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-32255?

    CVE-2023-32255 has a CVSS score of 5.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L .

  • Is there a patch available for CVE-2023-32255?

    No patch is currently available for CVE-2023-32255. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2023-32255 actively exploited?

    No — CVE-2023-32255 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Missing Release of Resource after Effective Lifetime (CWE-772)?

    The product does not release a resource after its effective lifetime has ended. View CWE-772 on MITRE CWE →

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