Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected af697c0f5c5b8798832e651baf23460d588393de before 92575f05a32dafb16348bfa5e62478118a9be069; affected af697c0f5c5b8798832e651baf23460d588393de before 4ceedc2f8bdffb82e40b7d1bb912304f8e157cb1; affected af697c0f5c5b8798832e651baf23460d588393de before ad87bd313f70b51e48019d5ce2d02d73152356b3; affected af697c0f5c5b8798832e651baf23460d588393de before d8f4ad5f3979dbd8e6251259562f12472717883a; affected af697c0f5c5b8798832e651baf23460d588393de before 7741ddc882a0c806a6508ba8203c55a779db7a21; affected af697c0f5c5b8798832e651baf23460d588393de before 82c3d6e9db41cbd3af1d4f90bdb441740b5fad10; affected af697c0f5c5b8798832e651baf23460d588393de before c9b3649a934d131151111354bcbb638076f03a30 |
| Linux / Linux | affected 4.19; unaffected 0 before 4.19; unaffected 4.19.284 through 4.19.*; unaffected 5.4.244 through 5.4.*; unaffected 5.10.181 through 5.10.*; unaffected 5.15.113 through 5.15.*; unaffected 6.1.30 through 6.1.*; unaffected 6.3.4 through 6.3.*; unaffected 6.4 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/92575f05a32dafb16348bfa5e62478118a9be069
- https://git.kernel.org/stable/c/4ceedc2f8bdffb82e40b7d1bb912304f8e157cb1
- https://git.kernel.org/stable/c/ad87bd313f70b51e48019d5ce2d02d73152356b3
- https://git.kernel.org/stable/c/d8f4ad5f3979dbd8e6251259562f12472717883a
- https://git.kernel.org/stable/c/7741ddc882a0c806a6508ba8203c55a779db7a21
- https://git.kernel.org/stable/c/82c3d6e9db41cbd3af1d4f90bdb441740b5fad10
- https://git.kernel.org/stable/c/c9b3649a934d131151111354bcbb638076f03a30