NetSight
IP …
high7.5

CVE-2025-71292

In the Linux kernel, the following vulnerability has been resolved: jfs: nlink overflow in jfs_rename If nlink is maximal for a directory (-1) and inside that …

Impact

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

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 2.6.12.1 before 5.10.252
from 5.11 before 5.15.202
from 5.16 before 6.1.165
from 6.2 before 6.6.128
from 6.7 before 6.12.75
from 6.13 before 6.18.16

References