The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013178 advisory.

    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.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2023-54124)

Note that Nessus relies on the presence of the package as reported by the vendor.

An update of the linux package has been released.

ID	Name	Product	Family	Published	Updated	Severity
308130	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013178)	Nessus	Unity Linux Local Security Checks	4/21/2026	4/21/2026	medium
280018	Linux Distros Unpatched Vulnerability : CVE-2023-54124	Nessus	Misc.	12/26/2025	2/3/2026	medium
151965	Photon OS 4.0: Linux PHSA-2021-4.0-0065	Nessus	PhotonOS Local Security Checks	7/22/2021	3/23/2026	high

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