• Tenable
  • CVEs
  • Settings
    Links
    Tenable Cloud Tenable Community & Support Tenable University
    Severity
    Theme
  • Tenable
  • Plugins
  • Overview
  • Plugins Pipeline
  • Newest
  • Updated
  • Search
  • Nessus Families
  • WAS Families
  • NNM Families
  • Tenable OT Security Families
  • Tenable Cloud Security Families
  • Tenable Self-Hosted Container Security Families
  • About Plugin Families
  • Release Notes
  • Audits
  • Overview
  • Newest
  • Updated
  • Search Audit Files
  • Search Items
  • References
  • Authorities
  • Documentation
  • Download All Audit Files
  • Indicators
  • Overview
  • Search
  • Indicators of Attack
  • Indicators of Exposure
  • Release Notes
  • CVEs
  • Overview
  • Newest
  • Updated
  • Search
  • Attack Path Techniques
  • Overview
  • Search
    • Links
    • Tenable Cloud
    • Tenable Community & Support
    • Tenable University
    • Settings
    • Severity
    • Theme
Detections
  • Plugins
  • Overview
  • Plugins Pipeline
  • Release Notes
  • Newest
  • Updated
  • Search
  • Nessus Families
  • WAS Families
  • NNM Families
  • Tenable OT Security Families
  • Tenable Cloud Security Families
  • Tenable Self-Hosted Container Security Families
  • About Plugin Families
  • Audits
  • Overview
  • Newest
  • Updated
  • Search Audit Files
  • Search Items
  • References
  • Authorities
  • Documentation
  • Download All Audit Files
  • Indicators
  • Overview
  • Search
  • Indicators of Attack
  • Indicators of Exposure
  • Release Notes
Analytics
  • CVEs
  • Overview
  • Newest
  • Updated
  • Search
  • Attack Path Techniques
  • Overview
  • Search
  1. CVEs
  2. CVE-2025-21844
  1. CVEs

CVE-2025-21844

medium
  • Information
  • CPEs
  • Plugins

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for next_buffer in receive_encrypted_standard() Add check for the return value of cifs_buf_get() and cifs_small_buf_get() in receive_encrypted_standard() to prevent null pointer dereference.

References

https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

https://git.kernel.org/stable/c/f618aeb6cad2307e48a641379db610abcf593edf

https://git.kernel.org/stable/c/f277e479eea3d1aa18bc712abe1d2bf3dece2e30

https://git.kernel.org/stable/c/a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd

https://git.kernel.org/stable/c/9e5d99a4cf2e23c716b44862975548415fae5391

https://git.kernel.org/stable/c/860ca5e50f73c2a1cef7eefc9d39d04e275417f7

https://git.kernel.org/stable/c/554736b583f529ee159aa95af9a0cbc12b5ffc96

https://git.kernel.org/stable/c/24e8e4523d3071bc5143b0db9127d511489f7b3b

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-6293

https://cert-portal.siemens.com/productcert/html/ssa-784472.html

https://cert-portal.siemens.com/productcert/html/ssa-265688.html

Details

Source: Mitre, NVD

Published: 2025-03-12

Updated: 2026-10-15

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

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

Severity: Medium

EPSS

EPSS: 0.00619

  • Tenable.com
  • Community & Support
  • Documentation
  • Education
  • © 2026 Tenable®, Inc. All Rights Reserved
  • Privacy Policy
  • Legal
  • 508 Compliance