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CVE Record

CVE-2024-57910: iio: light: vcnl4035: fix information leak in triggered buffer

In the Linux kernel, the following vulnerability has been resolved: iio: light: vcnl4035: fix information leak in triggered buffer The 'buffer' local array is used to push data to userspace from a triggered buffer, but it does not set an initial value for the single data element, which is an u16 aligned to 8 bytes. That leaves at least 4 bytes uninitialized even after writing an integer value with regmap_read(). Initialize the array to zero before using it to avoid pushing uninitialized information to userspace.

HighCVSS 7.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A local Linux user could receive uninitialized kernel memory through the VCNL4035 light sensor driver’s triggered buffer. This is mainly a confidentiality risk, with potential stability impact per the CVSS vector. Exposure depends on affected kernels, the driver being present, and local access to the relevant IIO interface.

Executive priority

Treat as a high-priority kernel hygiene issue for fleets with local multi-user access, embedded Linux, or sensor-enabled hardware. Prioritize normal kernel update channels, but do not assume broad enterprise exposure without confirming the driver and hardware path.

Technical view

The vcnl4035 IIO light driver used a stack buffer for userspace samples without clearing padding around a u16 value aligned to 8 bytes. The kernel fix initializes the array to zero before pushing data to userspace, preventing uninitialized memory disclosure.

Likely exposure

Likely limited to Linux systems running affected kernel builds with the vcnl4035 IIO light sensor driver enabled or available. The CVSS vector is local, low complexity, low privilege, and no user interaction. Distro backports may change exposure, so package-level kernel status must be verified.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. The issue requires local access and a reachable vulnerable driver path. No remote exploitation evidence is provided in the cited sources.

Researcher notes

The evidence supports an uninitialized-memory disclosure in a specific Linux IIO driver. The affected-version data is commit and kernel-series oriented, so distro package validation is essential. No source in the bundle provides exploit details or active exploitation confirmation.

Mitigation direction

  • Update to a vendor or stable Linux kernel containing the referenced vcnl4035 fix.
  • Check Debian LTS advisories if running Debian-derived long-term support kernels.
  • Verify whether your distro backported the stable kernel commits into existing package versions.
  • If patching is delayed, follow vendor guidance for reducing access to affected IIO devices.
  • Track kernel and distribution advisories for revised affected-version statements.

Validation and detection

  • Inventory Linux kernel versions and distribution package revisions across affected assets.
  • Check whether the vcnl4035 driver is built, loaded, or required on each system.
  • Map installed kernels against vendor advisories and the referenced stable commits.
  • Confirm updated systems include the zero-initialization fix for the triggered buffer.
  • Review local user access assumptions for systems exposing IIO sensor interfaces.
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

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CVE-2024-57910 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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
2ADP providers
10Source links

SSVC decision data

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

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
7.1CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H1.85.2CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

7.1High
CVSS 3.1 vector shape for CVE-2024-57910Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxda8ef748fec2d55db0ae424ab40eee0c737564aa, 49739675048d372946c1ef136c466d5675eba9f0, ec90b52c07c0403a6db60d752484ec08d605ead0, ec90b52c07c0403a6db60d752484ec08d605ead0, ec90b52c07c0403a6db60d752484ec08d605ead0, ec90b52c07c0403a6db60d752484ec08d605ead0, ec90b52c07c0403a6db60d752484ec08d605ead0, d69f0d132563a63688efb0afb4dfeaa74a217306, 4637815d7922c4bce3bacb13dd1fb5e9a7d167d8, 5.4.132, 5.10.50, 5.12.17, 5.13.2unaffected
LinuxLinux5.14, 0, 5.4.290, 5.10.234, 5.15.177, 6.1.125, 6.6.72, 6.12.10, 6.13affected
Weakness

CWE details

CWE-908

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Use of Uninitialized Resource

Use of Uninitialized Resource represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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