CVE-2026-23232

Summary

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

Revert "f2fs: block cache/dio write during f2fs_enable_checkpoint()"

This reverts commit 196c81fdd438f7ac429d5639090a9816abb9760a.

Original patch may cause below deadlock, revert it.

write remount

  • write_begin
  • lock_page — lock A
  • prepare_write_begin
  • f2fs_map_lock - f2fs_enable_checkpoint - down_write(cp_enable_rwsem) — lock B - sync_inode_sb - writepages - lock_page — lock A
  • down_read(cp_enable_rwsem) — lock A

Affected Software

VendorProductVersion RangeStatus
LinuxLinux196c81fdd438f7ac429d5639090a9816abb9760a < b6382273801bc7c778545dd8004c9a9d750b4f62affected
LinuxLinux196c81fdd438f7ac429d5639090a9816abb9760a < 3996b70209f145bfcf2afc7d05dd92c27b233b48affected
LinuxLinux6.19affected
LinuxLinux0 < 6.19unaffected
LinuxLinux6.19.3 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References