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

  - ocfs2: clear extent cache after moving/defragmenting extents The extent map cache can become stale when     extents are moved or defragmented, causing subsequent operations to see outdated extent flags. This     triggers a BUG_ON in ocfs2_refcount_cal_cow_clusters(). The problem occurs when: 1. copy_file_range()     creates a reflinked extent with OCFS2_EXT_REFCOUNTED 2. ioctl(FITRIM) triggers ocfs2_move_extents() 3.
    __ocfs2_move_extents_range() reads and caches the extent (flags=0x2) 4.
    ocfs2_move_extent()/ocfs2_defrag_extent() calls __ocfs2_move_extent() which clears OCFS2_EXT_REFCOUNTED     flag on disk (flags=0x0) 5. The extent map cache is not invalidated after the move 6. Later write()     operations read stale cached flags (0x2) but disk has updated flags (0x0), causing a mismatch 7.
    BUG_ON(!(rec->e_flags & OCFS2_EXT_REFCOUNTED)) triggers Fix by clearing the extent map cache after each     extent move/defrag operation in __ocfs2_move_extents_range(). This ensures subsequent operations read     fresh extent data from disk. (CVE-2025-40233)

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

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Linux Distros Unpatched Vulnerability : CVE-2025-40233

high Nessus Plugin ID 277493

Version 1.4