CVE-2025-68170

Kernel compromise via Radeon rdev double free

Published Dec 16, 2025 · Updated Dec 16, 2025

Double free in the Radeon KMS driver in Linux allows local users to disclose kernel memory, corrupt kernel state, or crash the host during teardown. radeon_driver_unload_kms() frees the devres-managed rdev before DRM-managed release reuses and frees the same allocation. Low-privileged access to an open Radeon render node and a probe, removal, shutdown, or hot-unplug event are required to reach the stale object.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in the Radeon KMS driver in Linux allows local users to disclose kernel memory, corrupt kernel state, or crash the host during teardown. radeon_driver_unload_kms() frees the devres-managed rdev before DRM-managed release reuses and frees the same allocation. Low-privileged access to an open Radeon render node and a probe, removal, shutdown, or hot-unplug event are required to reach the stale object.

The record

CVE
CVE-2025-68170
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.12
  2. Affected versionversion=a9ed2f052c5c14e4be58c5ec8794dffc87588123 <2413bbd1d692aed245c2aa38a369a1fa7590db84
  3. Affected versionversion=a9ed2f052c5c14e4be58c5ec8794dffc87588123 <3328443363a0895fd9c096edfe8ecd372ca9145e
  4. Affected versionversion=a9ed2f052c5c14e4be58c5ec8794dffc87588123 <f7482516002a11317912e29577bbf33cf59a0fb1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12; version=a9ed2f052c5c14e4be58c5ec8794dffc87588123 <2413bbd1d692aed245c2aa38a369a1fa7590db84; version=a9ed2f052c5c14e4be58c5ec8794dffc87588123 <3328443363a0895fd9c096edfe8ecd372ca9145e; version=a9ed2f052c5c14e4be58c5ec8794dffc87588123 <f7482516002a11317912e29577bbf33cf59a0fb1

Published CVSS scores

7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5OracleCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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