7.8

CVE-2026-72172

mm/mm_init: fix uninitialized struct pages for ZONE_DEVICE

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 6fd3620b342861de9547ea01d28f664892ef51a1
Version < c5ef574d57e4a701485c13f26822328c91f05413
Status affected
Version 6fd3620b342861de9547ea01d28f664892ef51a1
Version < 511a60e71aec308b24722cffc1912bf6befb87bf
Status affected
Version 6fd3620b342861de9547ea01d28f664892ef51a1
Version < 11f2826e9ee6f24aaa774e3dcd75abbe4b3091b6
Status affected
Version 6fd3620b342861de9547ea01d28f664892ef51a1
Version < da5234df0941665f3a3f5b80f3dab94046537be0
Status affected
Version 6fd3620b342861de9547ea01d28f664892ef51a1
Version < b91e27bce37cab9f35de0059278ebe457ca9878b
Status affected
Version 6fd3620b342861de9547ea01d28f664892ef51a1
Version < cd681403a87085562499d60325b7b45d3be11217
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.19
Status affected
Version 0
Version < 5.19
Status unaffected
Version <= 6.1.*
Version 6.1.184
Status unaffected
Version <= 6.6.*
Version 6.6.145
Status unaffected
Version <= 6.12.*
Version 6.12.97
Status unaffected
Version <= 6.18.*
Version 6.18.40
Status unaffected
Version <= 7.1.*
Version 7.1.5
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.06
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/511a60e71aec308b24722cffc1912bf6befb87bf
https://git.kernel.org/stable/c/11f2826e9ee6f24aaa774e3dcd75abbe4b3091b6
https://git.kernel.org/stable/c/da5234df0941665f3a3f5b80f3dab94046537be0
https://git.kernel.org/stable/c/b91e27bce37cab9f35de0059278ebe457ca9878b
https://git.kernel.org/stable/c/cd681403a87085562499d60325b7b45d3be11217
https://git.kernel.org/stable/c/c5ef574d57e4a701485c13f26822328c91f05413