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CVE Record

CVE-2025-71138: drm/msm/dpu: Add missing NULL pointer check for pingpong interface

In the Linux kernel, the following vulnerability has been resolved: drm/msm/dpu: Add missing NULL pointer check for pingpong interface It is checked almost always in dpu_encoder_phys_wb_setup_ctl(), but in a single place the check is missing. Also use convenient locals instead of phys_enc->* where available. Patchwork: https://patchwork.freedesktop.org/patch/693860/

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue is a missing safety check in the Qualcomm MSM display driver path. If that path receives an unexpected NULL pingpong interface, the kernel could behave incorrectly. The public record does not provide CVSS, confirmed impact, or exploit details, so business urgency depends on whether affected kernels and Qualcomm display hardware are in use.

Executive priority

Treat as monitor-and-patch, not emergency response, unless the organization operates affected Linux devices with Qualcomm display stacks. The lack of CVSS and exploitation evidence lowers immediate urgency, but kernel defects should still enter normal patch governance.

Technical view

CVE-2025-71138 fixes a missing NULL pointer check in drm/msm/dpu, specifically dpu_encoder_phys_wb_setup_ctl() handling of the pingpong interface. The source references stable kernel commits and a freedesktop Patchwork item. Public metadata lists Linux as affected but provides no CWE, CVSS, exploitability, or complete impact statement.

Likely exposure

Likely limited to Linux systems using the drm/msm/dpu driver, commonly tied to Qualcomm MSM display hardware. Generic servers without this driver or hardware are less likely to be exposed, but kernel builds and vendor backports must be checked.

Exploitation context

CISA KEV is false in the provided bundle, and no cited source states active exploitation. The available evidence supports a defensive interpretation only: a kernel NULL-check bug was fixed, but public exploitation requirements and reachable attack surface are not documented.

Researcher notes

The record is sparse. It identifies the fixed function and stable commit references, but not the triggering conditions, privilege boundary, or impact class. Analysis should focus on code reachability in drm/msm/dpu and vendor branch backport status.

Mitigation direction

  • Apply Linux kernel or distribution updates containing the referenced stable fixes.
  • Check vendor advisories for affected branches and supported backports.
  • Prioritize systems using Qualcomm MSM display hardware or drm/msm/dpu.
  • Do not assume unaffected status from version numbers alone; verify backported fixes.

Validation and detection

  • Inventory deployed Linux kernel versions and hardware using the MSM DPU display driver.
  • Confirm whether vendor kernel packages include the referenced stable commits.
  • Review source or changelog for the added pingpong NULL check.
  • Track CVE Program updates for CVSS, impact, or affected-version clarification.
Prepared
Confidence
medium
Sources
7

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-2025-71138 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
3Timeline events
0ADP providers
5Source links

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
LinuxLinuxd7d0e73f7de33a2b9998b607707a3e944ef3b86d, d7d0e73f7de33a2b9998b607707a3e944ef3b86d, d7d0e73f7de33a2b9998b607707a3e944ef3b86d, d7d0e73f7de33a2b9998b607707a3e944ef3b86dunaffected
LinuxLinux5.19, 0, 6.6.120, 6.12.64, 6.18.4, 6.19affected
Weakness

CWE details

No CWE listed

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