CVE-2025-71292

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> jfs: nlink overflow in jfs_rename<br /> <br /> If nlink is maximal for a directory (-1) and inside that directory you<br /> perform a rename for some child directory (not moving from the parent),<br /> then the nlink of the first directory is first incremented and later<br /> decremented. Normally this is fine, but when nlink = -1 this causes a<br /> wrap around to 0, and then drop_nlink issues a warning.<br /> <br /> After applying the patch syzbot no longer issues any warnings. I also<br /> ran some basic fs tests to look for any regressions.