CVE-2024-46780

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.52

Description The issue concerns the nilfs2 file system in the Linux kernel, where the superblock buffers can be overwritten, swapped, or abandoned due to various operations. Accessing these buffers requires mutual exclusion using the nilfs->ns sem reader/writer semaphore. However, some sysfs attribute show methods read the superblock buffer without this necessary mutual exclusion, leading to potential problems with pointer dereferencing and memory access.

Recommendations To resolve the issue, update the Linux kernel to version 6.6.52 or later. As a temporary workaround, consider restricting access to the sysfs attributes that read the superblock buffer without mutual exclusion, until a patch is available.