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CVE Record

CVE-2025-71307: drm/panthor: Fix NULL pointer dereference on panthor_fw_unplug

In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix NULL pointer dereference on panthor_fw_unplug This patch removes the MCU halt and wait for halt procedures during panthor_fw_unplug() as the MCU can be in a variety of states or the FW may not even be loaded/initialized at all, the latter of which can lead to a NULL pointer dereference. It should be safe on unplug to just disable the MCU without waiting for it to halt as it may not be able to.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel driver reliability flaw. During panthor firmware unplug, the kernel may dereference a NULL pointer if firmware was not loaded or initialized. The visible business impact is system availability, not data theft. No severity score or active exploitation evidence is provided.

Executive priority

Prioritize as a patch-management item for Linux systems that depend on this driver. Escalate only if affected kernels are deployed in availability-sensitive environments or vendor advisories later assign higher severity.

Technical view

The flaw is in drm/panthor panthor_fw_unplug(). Existing logic attempted MCU halt and wait operations during unplug, but the MCU or firmware can be in uninitialized states. The fix removes those halt-and-wait procedures and disables the MCU directly during unplug.

Likely exposure

Exposure appears limited to Linux systems running affected kernel builds with the drm/panthor component present and reachable. The source lists Linux version data including 6.19, 6.19.4, and 7.0, but the exact affected range format is incomplete.

Exploitation context

The provided sources do not show active exploitation, public exploit availability, or KEV listing. Treat this as a kernel availability issue until vendor or distribution advisories provide scoring and operational impact details.

Researcher notes

Evidence supports a NULL pointer dereference during panthor firmware unplug caused by uninitialized firmware or MCU state. The source bundle lacks CVSS, CWE, exploitability detail, and clear affected-version range semantics, so conclusions should remain conservative.

Mitigation direction

  • Review kernel vendor or distribution advisories for fixed package availability.
  • Prioritize updates on systems using affected Linux kernel builds.
  • Track the referenced stable kernel commits for backport status.
  • If updates are unavailable, assess whether panthor exposure is operationally required.

Validation and detection

  • Inventory Linux kernel versions across affected fleets.
  • Identify systems with drm/panthor component present or enabled.
  • Compare installed kernels against vendor-fixed builds or referenced commits.
  • Monitor crash logs for NULL dereference events involving panthor_fw_unplug().
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

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CVE-2025-71307 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
3Source 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
LinuxLinux51407254986501b19681d55531963f1ea58e89cd, 51407254986501b19681d55531963f1ea58e89cdunaffected
LinuxLinux6.19, 0, 6.19.4, 7.0affected
Weakness

CWE details

No CWE listed

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