CVE-2024-52319: mm: use aligned address in clear_gigantic_page()

Severity: high (CVSS 7.8 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: 2025-01-11 · updated 2026-08-04
Weakness: CWE-787

Description

In the Linux kernel, the following vulnerability has been resolved: mm: use aligned address in clear_gigantic_page() In current kernel, hugetlb_no_page() calls folio_zero_user() with the fault address. Where the fault address may be not aligned with the huge page size. Then, folio_zero_user() may call clear_gigantic_page() with the address, while clear_gigantic_page() requires the address to be huge page size aligned. So, this may cause memory corruption or information leak, addtional, use more obvious naming 'addr_hint' instead of 'addr' for clear_gigantic_page().

Affected products

Linux kernel: from 6.11 before 6.12.7; 6.13-rc1, 6.13-rc2, 6.13-rc3 — fixed in 6.12.7

How to fix

Upgrade to a fixed version: Linux kernel 6.12.7. Check the vendor advisory for mitigations.

References

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