CVE-2025-40049 Squashfs: fix uninit-value in squashfs_get_parent

In the Linux kernel, the following vulnerability has been resolved: Squashfs: fix uninit-value in squashfsgetparent Syzkaller reports a "KMSAN: uninit-value in squashfsgetparent" bug. This is caused by openbyhandleat being called with a file handle containing an invalid parent inode number. In...