CVE-2023-52586

Display disruption via unsynchronized vblank callbacks

Published Mar 6, 2024 · Updated Aug 5, 2026

Race condition in the MSM DPU display driver in Linux 4.19 through 6.7.3 allows local users to disrupt vblank IRQ callback management. The vblank enable and disable paths can run concurrently while registering or unregistering the callback because dpu_encoder_phys lacks a mutex around the shared reference count and callback operations. Exploitation requires local low-privileged access and a kernel built with the affected Qualcomm MSM display driver; published sources do not identify a specific user-visible failure mode.

CVSS severity7.0
High
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

Race condition in the MSM DPU display driver in Linux 4.19 through 6.7.3 allows local users to disrupt vblank IRQ callback management. The vblank enable and disable paths can run concurrently while registering or unregistering the callback because dpu_encoder_phys lacks a mutex around the shared reference count and callback operations. Exploitation requires local low-privileged access and a kernel built with the affected Qualcomm MSM display driver; published sources do not identify a specific user-visible failure mode.

The record

CVE
CVE-2023-52586
Published
Mar 6, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef <14f109bf74dd67e1d0469fed859c8e506b0df53f
  2. Affected versionversion=25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef <45284ff733e4caf6c118aae5131eb7e7cf3eea5a
  3. Affected versionversion=4.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef <14f109bf74dd67e1d0469fed859c8e506b0df53f; version=25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef <45284ff733e4caf6c118aae5131eb7e7cf3eea5a; version=4.19

Published CVSS scores

7.0NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.7SUSECVSS: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.

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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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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