drm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram (CVE-2026-89808) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89808

drm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram

Answer in brief

CVE-2026-89808 records a Unknown severity vulnerability in drm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram. The current sources do not mark it as known exploited. The current feed maps 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.

Published Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ae806a95b28fcecb913430cfa45a252e91a945d6 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0a9a0e8a97da70a0336c9115178aaf1be29bcfb1 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <520e345ffe05aabef1db82beda4288afb1757ff2 \|\| >=0 <6.18.51 \|\| >=0 <7.2.5	ae806a95b28fcecb913430cfa45a252e91a945d6, 0a9a0e8a97da70a0336c9115178aaf1be29bcfb1, 520e345ffe05aabef1db82beda4288afb1757ff2, 6.18.51, 7.2.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to ae806a95b28fcecb913430cfa45a252e91a945d6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram When migration vm range is hole at cpu side(MIGRATE_PFN_MIGRATE set + MIGRATE_PFN_VALID unset) driver still allocates device pages. There is no dma map of src pages and migration. j is 0 and svm_migrate_copy_memory_gart() will return an uninitialized r. That can trigger out_free_vram_pages to drop all VRAM just set up. Initialize r and only call the last svm_migrate_copy_memory_gart if j > 0. Current code postponed the last page to the final copy. This patch flushes on the last page when reach to the end of current drm_buddy_block; avoids another svm_migrate_copy_memory_gart.

Quoted source text, attributed separately from HOL analysis.