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CVE-2026-23232

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

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Severity

Unknown

Red Hat Product Security

—

CVSS

Review impact separately from score.

Published · March 4, 2026

Updated · June 28, 2026

Description

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

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE not specified