CVE-2025-39767

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

Description: The Linux kernel contains a flaw related to module loading time optimization. Specifically, the module frob arch sections() function utilizes a counting algorithm with O(n^2) complexity when determining the number of PLTs/GOTs needed for relocations. This can lead to a soft deadlock when CONFIG KASAN, CONFIG PREEMPT VOLUNTARY BUILD, and CONFIG PREEMPT VOLUNTARY are enabled simultaneously, particularly when loading modules like amdgpu that have a large number of relocations. The issue is resolved by sorting the relocation list by info and addend, reducing the algorithm's complexity to O(n log n). This optimization significantly reduces module load time.

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