ntfs: treat any nonzero dio zero-range return as an error

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In the Linux kernel, the following vulnerability has been resolved: ntfs: treat any nonzero dio zero-range return as an error ntfs_dio_zero_range() returns either 0 or a negative errno from blkdev_issue_zeroout(); it never returns a positive value. The zeroing failure check in ntfs_attr_fallocate() therefore never fired, so a failed zeroing operation was silently ignored: the loop kept going, the newly allocated clusters were folded into initialized_size and the write could succeed leaving stale on-disk data. Treat any nonzero return as an error and abort the allocation.

Source published

25 Sep 2026 10:36:14 UTC

Source modified

19 Oct 2026 09:14:31 UTC

Observed here

23 Oct 2026 15:48:27 UTC

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