CVE-2026-68236

Local privilege escalation via double stream release

Published Aug 10, 2026 · Updated Aug 10, 2026

Use-after-free in the Linux kernel AMD display driver allows local users to corrupt memory through a crafted DRM atomic commit. In dm_update_crtc_state(), the skip_modeset branch releases new_stream without clearing it, so a later color-management error releases the dangling pointer again. The path requires DRM-master access to an AMD GPU card node; exploitation can panic the kernel or elevate the caller's privileges.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel AMD display driver allows local users to corrupt memory through a crafted DRM atomic commit. In dm_update_crtc_state(), the skip_modeset branch releases new_stream without clearing it, so a later color-management error releases the dangling pointer again. The path requires DRM-master access to an AMD GPU card node; exploitation can panic the kernel or elevate the caller's privileges.

The record

CVE
CVE-2026-68236
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-763, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record 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=4.15
  2. Affected versionversion=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <0676fecbb5242aa22c057e78326d6d6041db034c
  3. Affected versionversion=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <5182e442e61397d446c36995b8f5676942d35b82
  4. Affected versionversion=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <679f23f0a3606afcef1ffabd72222f00a54ad9e3
  5. Affected versionversion=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <9fa26b9eed6195bf840f39ac183b9a6237548755
  6. Affected versionversion=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <ba8bf1dcbb44773e7a0fd13b42925c644e0d5e76

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <0676fecbb5242aa22c057e78326d6d6041db034c; version=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <5182e442e61397d446c36995b8f5676942d35b82; version=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <679f23f0a3606afcef1ffabd72222f00a54ad9e3; version=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <9fa26b9eed6195bf840f39ac183b9a6237548755; version=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <ba8bf1dcbb44773e7a0fd13b42925c644e0d5e76

Published CVSS scores

7.0Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

CWE-763Release of Invalid Pointer or Reference
T1068Exploitation for Privilege Escalation

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

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Your stack

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