CVE-2026-43117

In the Linux kernel, the following vulnerability has been resolved:

btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()

If overlay is used on top of btrfs, dentry->d_sb translates to overlay’s
super block and fsid assignment will lead to a crash.

Use file_inode(file)->i_sb to always get btrfs_sb.

More information : https://git.kernel.org/stable/c/2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a