Fix Use strncpy to avoid buffer overflow

[lamcodeofpwnosec]

In _imagingcms.c used pillow vulnerable a buffer overflow exists because strcpy is used instead of strncpy.

    else {
        /* take a wild guess... but you probably should fail instead. */
        return TYPE_GRAY_8; /* so there's no buffer overrun... */

POC

https://raw.githubusercontent.com/horizon3ai/CVE-2022-28219/refs/heads/main/CVE-2022-28219.py

CWE-120
CWE-676
CWE-680
CVE-2024-28219

Code changes

Please delete options that are not relevant.

• Bug fix (non-breaking)
• New feature (non-breaking)
• Vulnerability mitigation update (non-breaking)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new Warnings, errors, bugs
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have checked my code and corrected any misspellings