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CVE Record

CVE-2022-50878: gpu: lontium-lt9611: Fix NULL pointer dereference in lt9611_connector_init()

In the Linux kernel, the following vulnerability has been resolved: gpu: lontium-lt9611: Fix NULL pointer dereference in lt9611_connector_init() A NULL check for bridge->encoder shows that it may be NULL, but it already been dereferenced on all paths leading to the check. 812 if (!bridge->encoder) { Dereference the pointer bridge->encoder. 810 drm_connector_attach_encoder(&lt9611->connector, bridge->encoder);

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-50878 is a Linux kernel bug in the Lontium LT9611 display bridge driver. A missing NULL check can cause the kernel to dereference an invalid pointer. The public record does not provide CVSS, exploitation evidence, or broad impact details.

Executive priority

Handle as a targeted kernel maintenance issue. Prioritize embedded, appliance, or display-capable Linux systems using LT9611 hardware. For typical server fleets, urgency is lower unless the affected driver is present.

Technical view

In lt9611_connector_init(), bridge->encoder is passed to drm_connector_attach_encoder() before the later NULL check. The CVE record describes this as a resolved NULL pointer dereference in the Linux kernel GPU DRM bridge driver, with fixes referenced in stable kernel commits.

Likely exposure

Most relevant to Linux systems that include and use the lontium-lt9611 driver, typically where LT9611 display bridge hardware is present. General-purpose Linux servers without this driver or hardware are less likely exposed, but source evidence is limited.

Exploitation context

CISA KEV is false in the provided data, and no cited source claims active exploitation. The likely impact is reliability-related kernel failure or denial of service during driver initialization, but triggering conditions and attacker requirements are not specified in the sources.

Researcher notes

The public CVE record is sparse: no CVSS, CWE, exploitability assessment, or detailed affected-version ranges beyond Linux kernel metadata and stable commit references. Avoid assuming remote exploitability or active exploitation without additional vendor evidence.

Mitigation direction

  • Check your Linux vendor or distribution advisory for CVE-2022-50878 guidance.
  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Prioritize systems using the Lontium LT9611 display bridge driver.
  • If unsupported, assess whether the driver is built, loaded, or required.

Validation and detection

  • Inventory Linux kernel versions and vendor patch status.
  • Confirm whether the lontium-lt9611 driver is present or enabled.
  • Check source or changelog for the referenced lt9611_connector_init() fix.
  • Validate remediation through standard kernel update compliance reporting.
Prepared
Confidence
medium
Sources
7

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-2022-50878 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
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux23278bf54afe180967069bdc8c0f1c7a365fc63e, 23278bf54afe180967069bdc8c0f1c7a365fc63e, 23278bf54afe180967069bdc8c0f1c7a365fc63e, 23278bf54afe180967069bdc8c0f1c7a365fc63e, 23278bf54afe180967069bdc8c0f1c7a365fc63eunaffected
LinuxLinux5.10, 0, 5.10.150, 5.15.75, 5.19.17, 6.0.3, 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.