CVE-2025-71237
MediumSummary
A vulnerability in the Linux kernel has been fixed in the nilfs2 filesystem that could lead to block overflow and system hang. The issue occurred when executing the FITRIM command if the end_block value was too small.
Risk Assessment
System hangs can lead to service unavailability and potential data loss. Organizations should be aware of the risks associated with using vulnerable kernel versions.
Recommendation
It is recommended to update the Linux kernel to the latest version to eliminate this vulnerability. Additionally, systems should be monitored for unauthorized FITRIM commands.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: nilfs2: Fix potential block overflow that cause system hang When a user executes the FITRIM command, an underflow can occur when calculating nblocks if end_block is too small. Since nblocks is of type sector_t, which is u64, a neg