What’s Vulnerable › Vulnerabilities

CVE-2026-98880: ntfs3: handle set_blocksize failures

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-23 · updated 2026-10-26

Description

In the Linux kernel, the following vulnerability has been resolved: ntfs3: handle set_blocksize failures ntfs3 uses buffer_heads, which don't handle block size > PAGE_SIZE well. Without this, mounting we will hit the BUG_ON(offset >= folio_size(folio)); in folio_set_bh on the first __bread_gfp call.

Affected products

• Linux kernel: before 6.6.158; before 6.12.111; before 6.18.53 — fixed in 6.12.111, 6.18.53, 6.6.158, 7.2

How to fix

Upgrade to a fixed version: Linux kernel 6.12.111, 6.18.53, 6.6.158, 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/24f7d1824b7581ae3daf9d443c5dfeabd89df6d8
• https://git.kernel.org/stable/c/78e10082f3e919b8863958feac5f269d3ade9469
• https://git.kernel.org/stable/c/c5b8a7ec9a0a71518915c82b8552be1ccbb88288
• https://git.kernel.org/stable/c/df9dac4dbe557f6455a61e68cc09ef98b22f3686

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