Answer in brief
CVE-2026-80582 records a High severity (CVSS 7.8) vulnerability in drm/shmem_helper: Check VMA boundaries for PMD mappings. 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.
CVSS is 7.8. 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 | >=fc3bbf34e643faa8678aabdc3810c60109f3435a <12803e89a1e593fd1e784dfe7453f5e392ccaff2 || >=fc3bbf34e643faa8678aabdc3810c60109f3435a <617bbd08714857c1613d7c550d43a9092ec0fb97 | 12803e89a1e593fd1e784dfe7453f5e392ccaff2, 617bbd08714857c1613d7c550d43a9092ec0fb97 |
| Linux/Linuxgeneric | 7.0 | Not reported |
Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 26, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/shmem_helper: Check VMA boundaries for PMD mappings In the ->huge_fault handler do not install a PMD huge page mapping if the huge page exceeds the boundaries of the VMA. All other ->huge_fault handlers have similar checks and the resulting mapping will trigger a VM_BUG_ON_VMA() if it ever reaches copy_pmd_range().
Quoted source text, attributed separately from HOL analysis.