CVE-2026-89833

Updated on 16 Sep 2026

Severity

4.7 Medium severity

Details

CVSS score
4.7

Overview

About vulnerability

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

f2fs: fix to avoid potential deadloop in f2fs_fsync_node_pages()

There is potential deadloop in race condition:

Thread A Thread B

  • fsync
  • f2fs_do_sync_file
  • f2fs_fsync_node_pages
  • last_fsync_dnode
  • folio_get(last_folio)
  • f2fs_setattr
  • f2fs_truncate
  • f2fs_truncate_blocks
  • f2fs_do_truncate_blocks
  • f2fs_truncate_inode_blocks
  • truncate_dnode
  • truncate_node
  • invalidate_mapping_pages
  • folio->mapping = NULL
  • is_node_folio alwasy return false
  • atomic && !marked is always true, then goto retry

Details

Fixes