# CVE-2023-54124: linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to drop all dirty pages during umount(...

CVE-2023-54124 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54124, released December 24, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-54124
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 24, 2025

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-54124](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54124.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-54124](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54124.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-54124](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54124.md) | Dec 24, 2025 |

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