CVE-2023-54124

f2fs: fix to drop all dirty pages during umount() if cp_error is set

HIGH

7.8

CVSS Score

Published: December 24, 2025 at 01:06 PM UTC

Updated: August 5, 2026 at 10:24 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to drop all dirty pages during umount() if cp_error is set xfstest generic/361 reports a bug as below: f2fs_bug_on(sbi, sbi->fsync_node_num); kernel BUG at fs/f2fs/super.c:1627! RIP: 0010:f2fs_put_super+0x3a8/0x3b0 Call Trace: generic_shutdown_super+0x8c/0x1b0 kill_block_super+0x2b/0x60 kill_f2fs_super+0x87/0x110 deactivate_locked_super+0x39/0x80 deactivate_super+0x46/0x50 cleanup_mnt+0x109/0x170 __cleanup_mnt+0x16/0x20 task_work_run+0x65/0xa0 exit_to_user_mode_prepare+0x175/0x190 syscall_exit_to_user_mode+0x25/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc During umount(), if cp_error is set, f2fs_wait_on_all_pages() should not stop waiting all F2FS_WB_CP_DATA pages to be writebacked, otherwise, fsync_node_num can be non-zero after f2fs_wait_on_all_pages() causing this bug. In this case, to avoid deadloop in f2fs_wait_on_all_pages(), it needs to drop all dirty pages rather than redirtying them.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.19 ≤ v < 4.19.2844.19 ≤ v < 5.10.1814.19 ≤ v < 5.15.1134.19 ≤ v < 5.4.2444.19 ≤ v < 6.1.304.19 ≤ v < 6.3.44.19 ≤ v < 6.44.19af697c0f5c5b8798832e651baf23460d588393de

Vendor states this is fixed in 4ceedc2f8bdffb82e40b7d1bb912304f8e157cb1 (fixed)

Vendor states this is fixed in 7741ddc882a0c806a6508ba8203c55a779db7a21 (fixed)

Vendor states this is fixed in 82c3d6e9db41cbd3af1d4f90bdb441740b5fad10 (fixed)

Vendor states this is fixed in 92575f05a32dafb16348bfa5e62478118a9be069 (fixed)

Vendor states this is fixed in ad87bd313f70b51e48019d5ce2d02d73152356b3 (fixed)

Vendor states this is fixed in c9b3649a934d131151111354bcbb638076f03a30 (fixed)

Vendor states this is fixed in d8f4ad5f3979dbd8e6251259562f12472717883a (fixed)

Vendor states this is fixed in 4.19 (unaffected)

Vendor states this is fixed in 4.19.284 (unaffected)

Vendor states this is fixed in 5.10.181 (unaffected)

Vendor states this is fixed in 5.15.113 (unaffected)

Vendor states this is fixed in 5.4.244 (unaffected)