Executive Summary

Informations
Name CVE-2025-21638 First vendor Publication 2025-01-19
Vendor Cve Last vendor Modification 2025-01-23

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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:

sctp: sysctl: auth_enable: avoid using current->nsproxy

As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons:

- Inconsistency: getting info from the reader's/writer's netns vs only
from the opener's netns.

- current->nsproxy can be NULL in some cases, resulting in an 'Oops'
(null-ptr-deref), e.g. when the current task is exiting, as spotted by
syzbot [1] using acct(2).

The 'net' structure can be obtained from the table->data using container_of().

Note that table->data could also be used directly, but that would increase the size of this fix, while 'sctp.ctl_sock' still needs to be retrieved from 'net' structure.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21638

Sources (Detail)

https://git.kernel.org/stable/c/15649fd5415eda664ef35780c2013adeb5d9c695
https://git.kernel.org/stable/c/1b67030d39f2b00f94ac1f0af11ba6657589e4d3
https://git.kernel.org/stable/c/7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6
https://git.kernel.org/stable/c/bd2a2939423566c654545fa3e96a656662a0af9e
https://git.kernel.org/stable/c/c184bc621e3cef03ac9ba81a50dda2dae6a21d36
Source Url

Alert History

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0
1
Date Informations
2025-01-23 21:20:32
  • Multiple Updates
2025-01-19 17:20:28
  • First insertion