CVE-2026-72172
CVE CVE-2026-72172EUVD EUVD-2026-58930Published 2026-08-15T05:53:37.000ZLast changed 2026-08-17T05:41:10.000ZCVSS 7.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 6fd3620b342861de9547ea01d28f664892ef51a1 <11f2826e9ee6f24aaa774e3dcd75abbe4b3091b6; patch: 6.12.97; patch: 7.1.5; patch: 6.18.40; 6fd3620b342861de9547ea01d28f664892ef51a1 <b91e27bce37cab9f35de0059278ebe457ca9878b; patch: 6.6.145; 6fd3620b342861de9547ea01d28f664892ef51a1 <da5234df0941665f3a3f5b80f3dab94046537be0; 6fd3620b342861de9547ea01d28f664892ef51a1 <511a60e71aec308b24722cffc1912bf6befb87bf; patch: 0; 6fd3620b342861de9547ea01d28f664892ef51a1 <cd681403a87085562499d60325b7b45d3be11217; patch: 7.2; 5.19
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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