CVE-2023-32256

Aug. 1, 2025, 6:15 p.m.

7.5
High

Description

A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.

Product(s) Impacted

Vendor Product Versions
Linux
  • Linux Kernel
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-421
Race Condition During Access to Alternate Channel
The product opens an alternate channel to communicate with an authorized user, but the channel is accessible to other actors.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
o linux linux_kernel / / / / / / / /

References

https://access.redhat.com/security/cve/CVE-2023-32256
https://bugzilla.redhat.com/show_bug.cgi?id=2385885
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=abcc506a9a71976a8b4c9bf3ee6efd13229c1e19
https://www.zerodayinitiative.com/advisories/ZDI-23-704/

Tags

secalert@redhat.com
CWE-421
2025-08-01
CVE-2023-32256

CVSS Score

7.5 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: HIGH
  • Privileges Required: NONE
  • Scope: CHANGED
  • Confidentiality Impact: LOW
  • Integrity Impact: NONE
  • Availability Impact: HIGH

    • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:H

    View Vector String

Timeline

Published: Aug. 1, 2025, 6:15 p.m.
Last Modified: Aug. 1, 2025, 6:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

secalert@redhat.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.