CVE-2026-68273

System instability via unlocked pstate context pointer

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL pointer dereference in the Linux kernel amdgpu driver allows local users to crash or destabilize an affected system. amdgpu_ctx_init() accesses the shared stable_pstate_ctx pointer without holding adev->pm.stable_pstate_ctx_lock, allowing concurrent sysfs and context operations to clear it during initialization. Low-privileged local access and an AMD GPU using context pstate handling are required; triggering can interrupt the system or overwrite the configured pstate.

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

NULL pointer dereference in the Linux kernel amdgpu driver allows local users to crash or destabilize an affected system. amdgpu_ctx_init() accesses the shared stable_pstate_ctx pointer without holding adev->pm.stable_pstate_ctx_lock, allowing concurrent sysfs and context operations to clear it during initialization. Low-privileged local access and an AMD GPU using context pstate handling are required; triggering can interrupt the system or overwrite the configured pstate.

The record

CVE
CVE-2026-68273
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
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

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Is a vulnerable build present?

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

  1. Affected versionversion=6.0.7 <6.1
  2. Affected versionversion=6.1
  3. Affected versionversion=6607901fce79959130db485e7549dacaaeef034e
  4. Affected versionversion=79610d3041338dc1ef554d6fd8b3b3e23be527f5 <23a8726e1d7597fe7c9a59d5dc42ba8b7d345b8a
  5. Affected versionversion=79610d3041338dc1ef554d6fd8b3b3e23be527f5 <9f9c88eb298c54348be3ca4087f4f4c615065b87
  6. Affected versionversion=79610d3041338dc1ef554d6fd8b3b3e23be527f5 <c1dc4ccb82c9e56325d8e7514ca4c90bd1efb351
  7. Affected versionversion=79610d3041338dc1ef554d6fd8b3b3e23be527f5 <e06c39cc1c48dca68a5ffd971c23025a52d46634

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0.7 <6.1; version=6.1; version=6607901fce79959130db485e7549dacaaeef034e; version=79610d3041338dc1ef554d6fd8b3b3e23be527f5 <23a8726e1d7597fe7c9a59d5dc42ba8b7d345b8a; version=79610d3041338dc1ef554d6fd8b3b3e23be527f5 <9f9c88eb298c54348be3ca4087f4f4c615065b87; version=79610d3041338dc1ef554d6fd8b3b3e23be527f5 <c1dc4ccb82c9e56325d8e7514ca4c90bd1efb351; version=79610d3041338dc1ef554d6fd8b3b3e23be527f5 <e06c39cc1c48dca68a5ffd971c23025a52d46634

Published CVSS scores

7.8Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Red HatCVSS:3.1/AV:L/AC:H/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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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