Executive Summary

Informations
Name CVE-2025-21669 First vendor Publication 2025-01-31
Vendor Cve Last vendor Modification 2025-02-04

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.5
Base Score 5.5 Environmental Score 5.5
impact SubScore 3.6 Temporal Score 5.5
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

vsock/virtio: discard packets if the transport changes

If the socket has been de-assigned or assigned to another transport, we must discard any packets received because they are not expected and would cause issues when we access vsk->transport.

A possible scenario is described by Hyunwoo Kim in the attached link, where after a first connect() interrupted by a signal, and a second connect() failed, we can find `vsk->transport` at NULL, leading to a NULL pointer dereference.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21669

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 3689

Sources (Detail)

https://git.kernel.org/stable/c/18a7fc371d1dbf8deff16c2dd9292bcc73f43040
https://git.kernel.org/stable/c/2cb7c756f605ec02ffe562fb26828e4bcc5fdfc1
https://git.kernel.org/stable/c/6486915fa661584d70e8e7e4068c6c075c67dd6d
https://git.kernel.org/stable/c/677579b641af109613564460a4e3bdcb16850b61
https://git.kernel.org/stable/c/88244163bc7e7b0ce9dd7bf4c8a563b41525c3ee
https://git.kernel.org/stable/c/d88b249e14bd0ee1e46bbe4f456e22e01b8c68de
Source Url

Alert History

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Date Informations
2025-03-19 03:18:36
  • Multiple Updates
2025-03-18 03:31:34
  • Multiple Updates
2025-03-14 03:18:37
  • Multiple Updates
2025-03-06 14:15:08
  • Multiple Updates
2025-03-06 03:09:30
  • Multiple Updates
2025-02-22 03:28:45
  • Multiple Updates
2025-02-04 21:20:40
  • Multiple Updates
2025-02-02 17:20:32
  • Multiple Updates
2025-01-31 17:20:28
  • First insertion