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CVE Record

CVE-2025-38098: drm/amd/display: Don't treat wb connector as physical in create_validate_stream_for_sink

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Don't treat wb connector as physical in create_validate_stream_for_sink Don't try to operate on a drm_wb_connector as an amdgpu_dm_connector. While dereferencing aconnector->base will "work" it's wrong and might lead to unknown bad things. Just... don't.

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux AMD display driver path can mistake a writeback connector for a physical AMD GPU connector. This incorrect type handling could cause serious kernel-level consequences. The supplied CVSS score is 7.8, requiring local low-privileged access, but the sources do not demonstrate a working exploit or confirm attacks.

Executive priority

Treat as a high-priority kernel maintenance issue on AMD graphics systems with untrusted local users. Schedule prompt patching, while recognizing that the supplied evidence does not show active exploitation or remotely reachable exposure.

Technical view

In create_validate_stream_for_sink, drm/amd/display could operate on a drm_wb_connector as though it were an amdgpu_dm_connector and dereference the incompatible connector structure. The record warns of unspecified harmful consequences. CVSS 3.1 rates potential confidentiality, integrity, and availability impact high, although no specific corruption primitive is documented.

Likely exposure

Potential exposure is limited to affected Linux kernels using the AMD display subsystem where the writeback-connector path is reachable. The bundle identifies releases including 6.8, 6.12.31, 6.14.9, and 6.15 as affected, but does not clearly express complete version ranges or vendor backport status.

Exploitation context

The CVSS vector describes a local, low-complexity attack requiring low privileges and no user interaction. This CVE is not listed as KEV in the supplied bundle, and no cited source establishes active exploitation, public exploit availability, or reliable practical exploitation.

Researcher notes

No CWE is assigned. The flaw is an invalid connector-type assumption involving drm_wb_connector and amdgpu_dm_connector. The sources provide stable-kernel fixes but do not establish the precise failure mode, a memory-corruption primitive, affected configuration prerequisites, exploit reliability, or comprehensive downstream package mappings.

Mitigation direction

  • Install a vendor-supported kernel containing the applicable stable fix or backport.
  • Review Linux distribution advisories to determine the corrected package for each deployed release.
  • Prioritize systems with AMD graphics and locally accessible untrusted users.
  • Apply normal kernel update procedures and reboot into the corrected kernel.

Validation and detection

  • Inventory running kernel versions and systems using the AMD display driver.
  • Confirm distribution package changelogs explicitly reference CVE-2025-38098 or a cited fix commit.
  • Verify the corrected kernel is active after reboot, not merely installed.
  • Review kernel logs for AMD display faults before and after remediation.
Prepared
Confidence
medium
Sources
5

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.

ATT&CK lookup starting points

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CVE-2025-38098 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
0ADP providers
4Source links

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
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2025-38098Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxdbf5d3d02987faa0eec3710dd687cd912362d7b5, dbf5d3d02987faa0eec3710dd687cd912362d7b5, dbf5d3d02987faa0eec3710dd687cd912362d7b5, 0fe85301b95077ac4fa4a91909d38b7341e81187, 6.7.2unaffected
LinuxLinux6.8, 0, 6.12.31, 6.14.9, 6.15affected
Weakness

CWE details

No CWE listed

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