Answer in brief
CVE-2026-72172 records a Unknown severity vulnerability in mm/mm_init: fix uninitialized struct pages for ZONE_DEVICE. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6fd3620b342861de9547ea01d28f664892ef51a1 <511a60e71aec308b24722cffc1912bf6befb87bf || >=6fd3620b342861de9547ea01d28f664892ef51a1 <11f2826e9ee6f24aaa774e3dcd75abbe4b3091b6 || >=6fd3620b342861de9547ea01d28f664892ef51a1 <da5234df0941665f3a3f5b80f3dab94046537be0 || >=6fd3620b342861de9547ea01d28f664892ef51a1 <b91e27bce37cab9f35de0059278ebe457ca9878b || >=6fd3620b342861de9547ea01d28f664892ef51a1 <cd681403a87085562499d60325b7b45d3be11217 | 511a60e71aec308b24722cffc1912bf6befb87bf, 11f2826e9ee6f24aaa774e3dcd75abbe4b3091b6, da5234df0941665f3a3f5b80f3dab94046537be0, b91e27bce37cab9f35de0059278ebe457ca9878b, cd681403a87085562499d60325b7b45d3be11217 |
| Linux/Linuxgeneric | 5.19 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-72172 records a Unknown severity vulnerability in mm/mm_init: fix uninitialized struct pages for ZONE_DEVICE. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6fd3620b342861de9547ea01d28f664892ef51a1 <511a60e71aec308b24722cffc1912bf6befb87bf || >=6fd3620b342861de9547ea01d28f664892ef51a1 <11f2826e9ee6f24aaa774e3dcd75abbe4b3091b6 || >=6fd3620b342861de9547ea01d28f664892ef51a1 <da5234df0941665f3a3f5b80f3dab94046537be0 || >=6fd3620b342861de9547ea01d28f664892ef51a1 <b91e27bce37cab9f35de0059278ebe457ca9878b || >=6fd3620b342861de9547ea01d28f664892ef51a1 <cd681403a87085562499d60325b7b45d3be11217 | 511a60e71aec308b24722cffc1912bf6befb87bf, 11f2826e9ee6f24aaa774e3dcd75abbe4b3091b6, da5234df0941665f3a3f5b80f3dab94046537be0, b91e27bce37cab9f35de0059278ebe457ca9878b, cd681403a87085562499d60325b7b45d3be11217 |
| Linux/Linuxgeneric | 5.19 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.