ghsa-f6pj-88hq-4vr4
Vulnerability from github
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": [],
"aliases": [
"CVE-2023-54124"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-24T13:16:14Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to drop all dirty pages during umount() if cp_error is set\n\nxfstest generic/361 reports a bug as below:\n\nf2fs_bug_on(sbi, sbi-\u003efsync_node_num);\n\nkernel BUG at fs/f2fs/super.c:1627!\nRIP: 0010:f2fs_put_super+0x3a8/0x3b0\nCall Trace:\n generic_shutdown_super+0x8c/0x1b0\n kill_block_super+0x2b/0x60\n kill_f2fs_super+0x87/0x110\n deactivate_locked_super+0x39/0x80\n deactivate_super+0x46/0x50\n cleanup_mnt+0x109/0x170\n __cleanup_mnt+0x16/0x20\n task_work_run+0x65/0xa0\n exit_to_user_mode_prepare+0x175/0x190\n syscall_exit_to_user_mode+0x25/0x50\n do_syscall_64+0x4c/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nDuring umount(), if cp_error is set, f2fs_wait_on_all_pages() should\nnot stop waiting all F2FS_WB_CP_DATA pages to be writebacked, otherwise,\nfsync_node_num can be non-zero after f2fs_wait_on_all_pages() causing\nthis bug.\n\nIn this case, to avoid deadloop in f2fs_wait_on_all_pages(), it needs\nto drop all dirty pages rather than redirtying them.",
"id": "GHSA-f6pj-88hq-4vr4",
"modified": "2025-12-24T15:30:38Z",
"published": "2025-12-24T15:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54124"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4ceedc2f8bdffb82e40b7d1bb912304f8e157cb1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7741ddc882a0c806a6508ba8203c55a779db7a21"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/82c3d6e9db41cbd3af1d4f90bdb441740b5fad10"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/92575f05a32dafb16348bfa5e62478118a9be069"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ad87bd313f70b51e48019d5ce2d02d73152356b3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c9b3649a934d131151111354bcbb638076f03a30"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d8f4ad5f3979dbd8e6251259562f12472717883a"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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