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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-40106 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: fix divide-by-zero in comedi_buf_munge() The comedi_buf_munge() function performs a modulo operation `async->munge_chan %= async->cmd.chanlist_len` without first checking if chanlist_len is zero. If a user program submits a command with chanlist_len set to zero, this causes a divide-by-zero error when the device processes data in the interrupt handler path. Add a check for zero chanlist_len at the beginning of the function, similar to the existing checks for !map and CMDF_RAWDATA flag. When chanlist_len is zero, update munge_count and return early, indicating the data was handled without munging. This prevents potential kernel panics from malformed user commands.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/2670932f2465793fea1ef073e40883e8390fa4d9 kernel.org
https://git.kernel.org/stable/c/4ffea48c69cb2b96a281cb7e5e42d706996631db kernel.org
https://git.kernel.org/stable/c/55520f65fd447e04099a2c44185453c18ea73b7e kernel.org
https://git.kernel.org/stable/c/6db19822512396be1a3e1e20c16c97270285ba1a kernel.org
https://git.kernel.org/stable/c/87b318ba81dda2ee7b603f4f6c55e78ec3e95974 kernel.org
https://git.kernel.org/stable/c/8f3e4cd9be4b47246ea73ce5e3e0fa2f57f0d10c kernel.org
https://git.kernel.org/stable/c/a4bb5d1bc2f238461bcbe5303eb500466690bb2c kernel.org
https://git.kernel.org/stable/c/d4854eff25efb06d0d84c13e7129bbdba4125f8c kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-40106
NVD Published Date:
10/31/2025
NVD Last Modified:
11/04/2025
Source:
kernel.org