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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-72172 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: mm/mm_init: fix uninitialized struct pages for ZONE_DEVICE If DAX memory is hotplugged into an unoccupied subsection of an early section, section_activate() reuses the unoptimized boot memmap. However, compound_nr_pages() still assumes that vmemmap optimization is in effect and initializes only the reduced number of struct pages. As a result, the remaining tail struct pages are left uninitialized, which can later lead to unexpected behavior or crashes. Fix this by treating early sections as unoptimized when calculating how many struct pages to initialize.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/11f2826e9ee6f24aaa774e3dcd75abbe4b3091b6 kernel.org
https://git.kernel.org/stable/c/511a60e71aec308b24722cffc1912bf6befb87bf kernel.org
https://git.kernel.org/stable/c/b91e27bce37cab9f35de0059278ebe457ca9878b kernel.org
https://git.kernel.org/stable/c/cd681403a87085562499d60325b7b45d3be11217 kernel.org
https://git.kernel.org/stable/c/da5234df0941665f3a3f5b80f3dab94046537be0 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-72172
NVD Published Date:
08/15/2026
NVD Last Modified:
08/15/2026
Source:
kernel.org