CVE-2025-22122: block: fix adding folio to bio

Severity: medium (CVSS 5.5 v3.1)
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: 2025-04-16 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: block: fix adding folio to bio >4GB folio is possible on some ARCHs, such as aarch64, 16GB hugepage is supported, then 'offset' of folio can't be held in 'unsigned int', cause warning in bio_add_folio_nofail() and IO failure. Fix it by adjusting 'page' & trimming 'offset' so that `->bi_offset` won't be overflow, and folio can be added to bio successfully.

Affected products

Linux kernel: from 6.12 before 6.12.33; from 6.13 before 6.14.2 — fixed in 6.12.33, 6.14.2

How to fix

Upgrade to a fixed version: Linux kernel 6.12.33, 6.14.2. Check the vendor advisory for mitigations.

References

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