CVE-2026-53056

System crash via DPU voltage-clock mismatch

Published Jun 24, 2026 · Updated Jun 24, 2026

Denial of service in the Linux kernel allows local users to crash systems through Display Processing Unit suspend and resume operations. dpu_runtime_suspend calls dev_pm_opp_set_rate(dev, 0), lowering the MMCX rail to MIN_SVS without lowering the core clock, so resume can re-enable a maximum-rate clock at insufficient voltage. Exploitation requires local access and an affected Qualcomm MSM DPU path; the resulting voltage-frequency mismatch causes instability or a system crash.

CVSS severity5.5
Medium
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

Denial of service in the Linux kernel allows local users to crash systems through Display Processing Unit suspend and resume operations. dpu_runtime_suspend calls dev_pm_opp_set_rate(dev, 0), lowering the MMCX rail to MIN_SVS without lowering the core clock, so resume can re-enable a maximum-rate clock at insufficient voltage. Exploitation requires local access and an affected Qualcomm MSM DPU path; the resulting voltage-frequency mismatch causes instability or a system crash.

The record

CVE
CVE-2026-53056
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=5.9
  2. Affected versionversion=b0530eb1191307e9038d75e5c83973a396137681 <0ccf4f27b4652570b5de3de02a89a86435559de9
  3. Affected versionversion=b0530eb1191307e9038d75e5c83973a396137681 <0f7dd5839cfabaf9c007fb718ec66e907a473c93
  4. Affected versionversion=b0530eb1191307e9038d75e5c83973a396137681 <1181a7028d37e0b1e720a36125a03f5db97e3d27
  5. Affected versionversion=b0530eb1191307e9038d75e5c83973a396137681 <9830999c9e065c1813ec5435bfe4eab98ee54a87
  6. Affected versionversion=b0530eb1191307e9038d75e5c83973a396137681 <bc1dccc518cc5ab5140fba06c27e7188e0ed342b
  7. Affected versionversion=b0530eb1191307e9038d75e5c83973a396137681 <c5735c7d0eef7a5240f9c1c66e44ba52a1be58d6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.9; version=b0530eb1191307e9038d75e5c83973a396137681 <0ccf4f27b4652570b5de3de02a89a86435559de9; version=b0530eb1191307e9038d75e5c83973a396137681 <0f7dd5839cfabaf9c007fb718ec66e907a473c93; version=b0530eb1191307e9038d75e5c83973a396137681 <1181a7028d37e0b1e720a36125a03f5db97e3d27; version=b0530eb1191307e9038d75e5c83973a396137681 <9830999c9e065c1813ec5435bfe4eab98ee54a87; version=b0530eb1191307e9038d75e5c83973a396137681 <bc1dccc518cc5ab5140fba06c27e7188e0ed342b; version=b0530eb1191307e9038d75e5c83973a396137681 <c5735c7d0eef7a5240f9c1c66e44ba52a1be58d6

Published CVSS scores

5.5NIST NVDCVSS: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.

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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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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