CVE-2025-38549

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths<br /> <br /> When processing mount options, efivarfs allocates efivarfs_fs_info (sfi)<br /> early in fs_context initialization. However, sfi is associated with the<br /> superblock and typically freed when the superblock is destroyed. If the<br /> fs_context is released (final put) before fill_super is called—such as<br /> on error paths or during reconfiguration—the sfi structure would leak,<br /> as ownership never transfers to the superblock.<br /> <br /> Implement the .free callback in efivarfs_context_ops to ensure any<br /> allocated sfi is properly freed if the fs_context is torn down before<br /> fill_super, preventing this memory leak.