CVE-2026-72187
Low risk· EPSS 9%Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
In the Linux kernel's NTFS filesystem, there is a self-deadlock issue during inode eviction. An attribute-list update can drop the last reference to a temporary attribute inode, leading to ntfs_drop_big_inode() being called for the base inode from within its own writeback path. If the base inode is unlinked, the function waits for folio writeback that the same worker is responsible for, causing an indefinite wait.
Risk Assessment
The vulnerability can cause system hangs (deadlock) during NTFS file operations, potentially leading to system unresponsiveness and availability loss.
Recommendation
Install the kernel patch that adds a reference to the base inode at the start of ntfs_writepages() and releases it at the end to avoid self-deadlock.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: ntfs: avoid self-deadlock during inode eviction An attribute-list update performed while allocating clusters can drop the last reference to the temporary attribute inode. Evicting that inode drops its reference to the base inode and can invoke ntfs_drop_big_inode() for the base inode from within the base inode's own writeback path. If the base inode is unlinked, ntfs_drop_big_inode() calls truncate_setsize(), which waits for the inode's folio writeback to complete. The same writeback worker is responsible for completing that writeback, so it waits for itself indefinitely. Prevent this self-deadlock by grabbing a reference to the base inode at the beginning of ntfs_writepages() and releasing it at the end of the function. This defers eviction until all bios have been submitted, allowing the wait for folio writeback to complete safely.