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CVE Record

CVE-2024-43894: drm/client: fix null pointer dereference in drm_client_modeset_probe

In the Linux kernel, the following vulnerability has been resolved: drm/client: fix null pointer dereference in drm_client_modeset_probe In drm_client_modeset_probe(), the return value of drm_mode_duplicate() is assigned to modeset->mode, which will lead to a possible NULL pointer dereference on failure of drm_mode_duplicate(). Add a check to avoid npd.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2024-43894 is a Linux kernel graphics subsystem bug. A failed memory-related operation in DRM client display mode probing could leave a NULL value that is later used, potentially crashing affected systems. Public sources do not provide a CVSS score or confirm active exploitation.

Executive priority

Treat as routine-to-prioritized kernel maintenance, not an emergency based on current evidence. Patch during the next appropriate Linux kernel update cycle, faster for systems where outages would be disruptive.

Technical view

The issue is a NULL pointer dereference in drm_client_modeset_probe(). The function assigns drm_mode_duplicate() output to modeset->mode without checking for failure. Kernel stable commits add a NULL check. The CVE record lists Linux kernel versions as affected and references multiple stable fixes plus Debian LTS advisories.

Likely exposure

Exposure is limited to systems running affected Linux kernels with the relevant DRM client code present. The source bundle does not define exact distribution package ranges beyond Linux kernel version data and Debian LTS advisory references.

Exploitation context

No active exploitation is indicated in KEV, and the provided sources do not describe public exploitation. The apparent impact is availability-oriented: a NULL pointer dereference may cause a kernel crash under failure conditions.

Researcher notes

Evidence is limited to the CVE description, stable kernel commits, and Debian LTS announcements. No CVSS, CWE, exploitability details, or attacker prerequisites are provided. Avoid assuming remote exploitability or privilege escalation without additional vendor analysis.

Mitigation direction

  • Apply Linux kernel updates from your distribution or vendor.
  • For Debian LTS, review the linked Debian security advisories.
  • If building kernels, include the referenced stable DRM client fix.
  • Prioritize systems where graphics/DRM functionality is enabled or business-critical.

Validation and detection

  • Inventory Linux kernel versions across servers, workstations, and appliances.
  • Check vendor advisories for whether your packaged kernel is affected.
  • Confirm installed kernel changelogs mention CVE-2024-43894 or the DRM client NULL check.
  • Verify systems boot into the updated kernel after patching.
Prepared
Confidence
medium
Sources
11

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-2024-43894 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
2ADP providers
10Source links

SSVC decision data

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

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
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxcf13909aee054f5aa667d4b9da0ac7df4f6c1327, cf13909aee054f5aa667d4b9da0ac7df4f6c1327, cf13909aee054f5aa667d4b9da0ac7df4f6c1327, cf13909aee054f5aa667d4b9da0ac7df4f6c1327, cf13909aee054f5aa667d4b9da0ac7df4f6c1327, cf13909aee054f5aa667d4b9da0ac7df4f6c1327, cf13909aee054f5aa667d4b9da0ac7df4f6c1327unaffected
LinuxLinux5.3, 0, 5.4.282, 5.10.224, 5.15.165, 6.1.105, 6.6.46, 6.10.5, 6.11affected
Weakness

CWE details

No CWE listed

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