Executive Summary

Informations
Name CVE-2025-37879 First vendor Publication 2025-05-09
Vendor Cve Last vendor Modification 2025-05-12

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
 
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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:

9p/net: fix improper handling of bogus negative read/write replies

In p9_client_write() and p9_client_read_once(), if the server incorrectly replies with success but a negative write/read count then we would consider written (negative) <= rsize (positive) because both variables were signed.

Make variables unsigned to avoid this problem.

The reproducer linked below now fails with the following error instead of a null pointer deref: 9pnet: bogus RWRITE count (4294967295 > 3)

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-37879

Sources (Detail)

https://git.kernel.org/stable/c/374e4cd75617c8c2552f562f39dd989583f5c330
https://git.kernel.org/stable/c/468ff4a7c61fb811c596a7c44b6a5455e40fd12b
https://git.kernel.org/stable/c/a68768e280b7d0c967ea509e791bb9b90adc94a5
https://git.kernel.org/stable/c/c548f95688e2b5ae0e2ae43d53cf717156c7d034
https://git.kernel.org/stable/c/d0259a856afca31d699b706ed5e2adf11086c73b
Source Url

Alert History

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0
Date Informations
2025-05-27 02:57:32
  • First insertion