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CVE-2024-55641 – XFS File System Unmount Crash Vulnerability

The following table lists the changes that have been made to the
CVE-2024-55641 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jan. 11, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    xfs: unlock inodes when erroring out of xfs_trans_alloc_dir

    Debugging a filesystem patch with generic/475 caused the system to hang
    after observing the following sequences in dmesg:

    XFS (dm-0): metadata I/O error in “xfs_imap_to_bp+0x61/0xe0 [xfs]” at daddr 0x491520 len 32 error 5
    XFS (dm-0): metadata I/O error in “xfs_btree_read_buf_block+0xba/0x160 [xfs]” at daddr 0x3445608 len 8 error 5
    XFS (dm-0): metadata I/O error in “xfs_imap_to_bp+0x61/0xe0 [xfs]” at daddr 0x138e1c0 len 32 error 5
    XFS (dm-0): log I/O error -5
    XFS (dm-0): Metadata I/O Error (0x1) detected at xfs_trans_read_buf_map+0x1ea/0x4b0 [xfs] (fs/xfs/xfs_trans_buf.c:311). Shutting down filesystem.
    XFS (dm-0): Please unmount the filesystem and rectify the problem(s)
    XFS (dm-0): Internal error dqp->q_ino.reserved q_ino.count at line 869 of file fs/xfs/xfs_trans_dquot.c. Caller xfs_trans_dqresv+0x236/0x440 [xfs]
    XFS (dm-0): Corruption detected. Unmount and run xfs_repair
    XFS (dm-0): Unmounting Filesystem be6bcbcc-9921-4deb-8d16-7cc94e335fa7

    The system is stuck in unmount trying to lock a couple of inodes so that
    they can be purged. The dquot corruption notice above is a clue to what
    happened — a link() call tried to set up a transaction to link a child
    into a directory. Quota reservation for the transaction failed after IO
    errors shut down the filesystem, but then we forgot to unlock the inodes
    on our way out. Fix that.
    Added Reference https://git.kernel.org/stable/c/53b001a21c9dff73b64e8c909c41991f01d5d00f
    Added Reference https://git.kernel.org/stable/c/6aefe5d97ae57b1343dc60d8bb6a4ed070e5bcea
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