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CVE Record

CVE-2022-50360: drm/msm/dp: fix aux-bus EP lifetime

In the Linux kernel, the following vulnerability has been resolved: drm/msm/dp: fix aux-bus EP lifetime Device-managed resources allocated post component bind must be tied to the lifetime of the aggregate DRM device or they will not necessarily be released when binding of the aggregate device is deferred. This can lead resource leaks or failure to bind the aggregate device when binding is later retried and a second attempt to allocate the resources is made. For the DP aux-bus, an attempt to populate the bus a second time will simply fail ("DP AUX EP device already populated"). Fix this by tying the lifetime of the EP device to the DRM device rather than DP controller platform device. Patchwork: https://patchwork.freedesktop.org/patch/502672/

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-50360 is a Linux kernel flaw in the Qualcomm MSM DisplayPort driver. Under certain device binding retry conditions, resources may not be released correctly, causing the display subsystem to fail to bind later. The published impact is availability, not data theft or privilege escalation.

Executive priority

Treat as a targeted availability risk for affected Linux devices, especially embedded or Qualcomm-based systems with DisplayPort. Prioritize normal kernel maintenance unless these systems are business-critical or showing display/DRM binding failures.

Technical view

The issue is in drm/msm/dp aux-bus endpoint lifetime handling. Device-managed resources allocated after component bind were tied to the DP controller platform device instead of the aggregate DRM device. If binding is deferred and retried, resources can leak and a second aux-bus population attempt can fail with “DP AUX EP device already populated.”

Likely exposure

Most relevant to Linux systems using the msm DRM DisplayPort path, commonly associated with Qualcomm-based platforms. The source lists Linux kernel versions including 5.19, 6.0.7, and 6.1 as affected, but product-level distribution exposure is not provided.

Exploitation context

The CVSS vector is local, low complexity, low privileges, no user interaction, with high availability impact. The provided sources do not report active exploitation, and the CVE is not marked in KEV.

Researcher notes

Evidence is limited to the CVE record and upstream stable commits. No CWE, CPE, distribution advisory, or public exploit evidence is provided. Analysis should focus on kernel configuration, platform hardware, and whether the stable fix is present.

Mitigation direction

  • Apply a vendor or distribution kernel update containing the referenced stable fixes.
  • If maintaining custom kernels, review and backport the linked upstream stable commits.
  • Check vendor guidance for affected platform-specific kernels and supported update paths.

Validation and detection

  • Inventory Linux kernel versions on Qualcomm/MSM DisplayPort-capable systems.
  • Confirm whether drm/msm DisplayPort support is built or loaded.
  • Compare kernel source or package changelog against the two referenced stable commits.
  • Review kernel logs for “DP AUX EP device already populated” during display binding failures.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2022-50360 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2022-50360Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxc3bf8e21b38a89418f2e22173b229aaad2306815, c3bf8e21b38a89418f2e22173b229aaad2306815unaffected
LinuxLinux5.19, 0, 6.0.7, 6.1affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.