CVE-2026-68364

System hang via ISM suspend deadlock

Published Aug 10, 2026 · Updated Aug 10, 2026

Denial of service in Linux before 7.1.6 allows local users to hang the system by suspending it while video is playing. amdgpu_dm_ism_disable() waits for ISM delayed work while holding dc_lock, but an in-flight worker also takes dc_lock, creating an ABBA deadlock. The flaw requires ISM work to be in flight during suspend, and successful triggering stalls suspend or resume rather than corrupting data.

CVSS severity4.7
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux before 7.1.6 allows local users to hang the system by suspending it while video is playing. amdgpu_dm_ism_disable() waits for ISM delayed work while holding dc_lock, but an in-flight worker also takes dc_lock, creating an ABBA deadlock. The flaw requires ISM work to be in flight during suspend, and successful triggering stalls suspend or resume rather than corrupting data.

The record

CVE
CVE-2026-68364
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=0 <7.1.6
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3714fe242592e3699ac5e2c19d68b275a210be7d
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <95776812e6b8f908563e8994d5d947b68baf68a6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0 <7.1.6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3714fe242592e3699ac5e2c19d68b275a210be7d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <95776812e6b8f908563e8994d5d947b68baf68a6

Published CVSS scores

4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/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.

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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

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Your stack

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