Executive Summary

Informations
Name CVE-2025-21637 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: udp_port: 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-2025-21637

Sources (Detail)

https://git.kernel.org/stable/c/0a0966312ac3eedd7f5f2a766ed4702df39a9a65
https://git.kernel.org/stable/c/55627918febdf9d71107a1e68d1528dc591c9a15
https://git.kernel.org/stable/c/5b77d73f3be5102720fb685b9e6900e3500e1096
https://git.kernel.org/stable/c/c10377bbc1972d858eaf0ab366a311b39f8ef1b6
https://git.kernel.org/stable/c/e919197fb8616331f5dc81e4c3cc3d12769cb725
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