CVE-2024-26621

mm: huge_memory: don't force huge page alignment on 32 bit

MEDIUM

5.5

CVSS Score

Published: March 2, 2024 at 09:31 PM UTC

Updated: August 5, 2026 at 12:04 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: mm: huge_memory: don't force huge page alignment on 32 bit commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP boundaries") caused two issues [1] [2] reported on 32 bit system or compat userspace. It doesn't make too much sense to force huge page alignment on 32 bit system due to the constrained virtual address space. [1] https://lore.kernel.org/linux-mm/[email protected]/ [2] https://lore.kernel.org/linux-mm/CAJuCfpHXLdQy1a2B6xN2d7quTYwg2OoZseYPZTRpU0eHHKD-sQ@mail.gmail.com/

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.18 ≤ v < 6.1.815.18 ≤ v < 6.6.465.18 ≤ v < 6.7.65.18 ≤ v < 6.86.2 ≤ v < 6.6.466.7 ≤ v < 6.7.61854bc6e2420472676c5c90d3d6b15f6cd640e406.8 rc1 6.8 rc2

Vendor states this is fixed in 4ef9ad19e17676b9ef071309bc62020e2373705d (fixed)

Vendor states this is fixed in 6ea9aa8d97e6563676094cb35755884173269555 (fixed)

Vendor states this is fixed in 7432376c913381c5f24d373a87ff629bbde94b47 (fixed)

Vendor states this is fixed in 87632bc9ecff5ded93433bc0fca428019bdd1cfe (fixed)

Vendor states this is fixed in 5.18 (unaffected)

Vendor states this is fixed in 6.1.81 (unaffected)

Vendor states this is fixed in 6.6.46 (unaffected)

Vendor states this is fixed in 6.7.6 (unaffected)

Vendor states this is fixed in 6.8 (unaffected)