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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-31747 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: me4000: Fix potential overrun of firmware buffer `me4000_xilinx_download()` loads the firmware that was requested by `request_firmware()`. It is possible for it to overrun the source buffer because it blindly trusts the file format. It reads a data stream length from the first 4 bytes into variable `file_length` and reads the data stream contents of length `file_length` from offset 16 onwards. Add a test to ensure that the supplied firmware is long enough to contain the header and the data stream. On failure, log an error and return `-EINVAL`. Note: The firmware loading was totally broken before commit ac584af59945 ("staging: comedi: me4000: fix firmware downloading"), but that is the most sensible target for this fix.


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.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/1603dd471f47762e9d1f52304edb3e49a7e62655 kernel.org
https://git.kernel.org/stable/c/3fb43a7a5b44713f892c58ead2e5f3a1bc9f4ee7 kernel.org
https://git.kernel.org/stable/c/64b24b713e1a3ea6624480594b4f8c2ff86502f2 kernel.org
https://git.kernel.org/stable/c/8ddfe6495c245226a30d8b36e2f4a7aa7712e8d6 kernel.org
https://git.kernel.org/stable/c/99f31aa98ab6e3805c455b65bcd01b3d48bdf1a5 kernel.org
https://git.kernel.org/stable/c/de3f923ae7d91480ed3ecea1b1e1fc0dc25b597d kernel.org
https://git.kernel.org/stable/c/eae19cab44204537f79146f15a51811b13227c38 kernel.org
https://git.kernel.org/stable/c/f72b5567f7c117b46b4058dc6a0c7554f8565561 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-31747
NVD Published Date:
05/01/2026
NVD Last Modified:
05/01/2026
Source:
kernel.org