What’s Vulnerable › Vulnerabilities

CVE-2026-97486: hpfs: 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: 2026-09-24 · updated 2026-10-03

Description

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

Affected products

• Linux kernel: 2.6.12 — fixed in 7.2

How to fix

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

References

• https://git.kernel.org/stable/c/0451927f42b0282d80d402e8e8c46ff34e9f606f
• https://git.kernel.org/stable/c/10f226687bcb07ed925a453b6f25e817165d113b
• https://git.kernel.org/stable/c/a405996f23e04942aad064ab8d50c55827482872
• https://git.kernel.org/stable/c/b618f681acb6748faf95eee9af2aac5455a74e68
• https://git.kernel.org/stable/c/f27e21cf3c0446a3536ea9b588a78a46b0a2cb66
• https://git.kernel.org/stable/c/f7b0cde62edb8ceff8bcc17ba3f1b086646fff89
• https://git.kernel.org/stable/c/fc79fcc78cb771f2a803e52149cac5ca9050fd05

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