CVE-2025-37740

In the Linux kernel, the following vulnerability has been resolved:

jfs: add sanity check for agwidth in dbMount

The width in dmapctl of the AG is zero, it trigger a divide error when
calculating the control page level in dbAllocAG.

To avoid this issue, add a check for agwidth in dbAllocAG.

More information : https://git.kernel.org/stable/c/722e72f7f9c69fcb3ab7988c2471feff7a4c8de1