What’s Vulnerable › Vulnerabilities

CVE-2026-98137: ntfs: treat any nonzero dio zero-range return as an error

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-25 · updated 2026-10-19

Description

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.

Affected products

• Linux kernel: from 7.1 before 7.2.7; 7.3-rc1 — fixed in 7.2.7

How to fix

Upgrade to a fixed version: Linux kernel 7.2.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/56392b0d5290ff2b05fc673bc07803b8ae4cfd1b
• https://git.kernel.org/stable/c/607a9478833db656e7ceac8e9e382fa4acfde545

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