Answer in brief
CVE-2026-80685 records a High severity (CVSS 7.1) vulnerability in mm/util: don't read __page_2 for order-1 folios in snapshot_page(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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.
CVSS is 7.1. 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=31a31da8a6187f1e5448ec73222e01d7d3fed4aa <9668ffe0e2a5e2399dce281620198a2e415871fc || >=31a31da8a6187f1e5448ec73222e01d7d3fed4aa <c649324571206a30949765320b91ccdb4c1722dc || >=31a31da8a6187f1e5448ec73222e01d7d3fed4aa <7441d6348c70738e9ed307510db171c7a9b3f4bf | 9668ffe0e2a5e2399dce281620198a2e415871fc, c649324571206a30949765320b91ccdb4c1722dc, 7441d6348c70738e9ed307510db171c7a9b3f4bf |
| Linux/Linuxgeneric | 6.15 | Not reported |
| Linux/Linuxgeneric | >=31a31da8a6187f1e5448ec73222e01d7d3fed4aa <9668ffe0e2a5e2399dce281620198a2e415871fc || >=31a31da8a6187f1e5448ec73222e01d7d3fed4aa <c649324571206a30949765320b91ccdb4c1722dc || >=31a31da8a6187f1e5448ec73222e01d7d3fed4aa <7441d6348c70738e9ed307510db171c7a9b3f4bf || 4117738bd42c8ab58090729daf0f8472a936f662 || >=6.12.111 <6.13 | 9668ffe0e2a5e2399dce281620198a2e415871fc, c649324571206a30949765320b91ccdb4c1722dc, 7441d6348c70738e9ed307510db171c7a9b3f4bf, 6.13 |
Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 28, 2026
In the Linux kernel, the following vulnerability has been resolved: mm/util: don't read __page_2 for order-1 folios in snapshot_page() snapshot_page() currently reads __page_2 after checking nr_pages > 1, but it should only do so when nr_pages > 2. If an order-1 folio is allocated at the end of a vmemmap section, __page_2 will not exist and reading it will cause a fault. During DLPAR memory remove on a 22 TB ppc64le LPAR, snapshot_page() oopsed on the page isolation path while reading an order-1 folio's __page_2 from an adjacent absent section (unmapped vmemmap). Fix this to avoid reading memmap that doesn't exist (e.g., a vmemmap hole).
Quoted source text, attributed separately from HOL analysis.