CVE-2026-64415

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A softlockup can occur in the Linux kernel during large full cluster reclaim operations when the system is under heavy load and the swap device contains many full clusters. This issue was observed in an arm64 environment with 320 CPUs and 1TB of memory during memory and swap stress testing. The problem resides in the swap reclaim full clusters() function, which can hold the CPU for too long without yielding. To resolve this, periodic calls to the cond resched() function are added to allow the scheduler to run other tasks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.