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CVE Record

CVE-2024-35830: media: tc358743: register v4l2 async device only after successful setup

In the Linux kernel, the following vulnerability has been resolved: media: tc358743: register v4l2 async device only after successful setup Ensure the device has been setup correctly before registering the v4l2 async device, thus allowing userspace to access.

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux video-bridge driver could expose its userspace interface before hardware setup completed successfully. A low-privileged local user could then interact with an incompletely initialized device. The supplied CVSS 3.1 score is 7.8, but practical exposure depends on systems using the Toshiba TC358743 media driver.

Executive priority

Treat this as a targeted high-priority kernel issue, not an internet-wide emergency. Accelerate remediation for relevant video-capture and embedded systems, particularly multi-user systems or those running untrusted workloads. Other systems can follow normal kernel maintenance after confirming that the affected driver and hardware path are absent.

Technical view

The fix changes tc358743 initialization ordering so V4L2 asynchronous registration occurs only after successful device setup. Earlier registration could make the interface reachable from userspace after incomplete or failed initialization. The sources do not identify a precise corruption primitive, CWE, or tested exploit, so impacts beyond the supplied CVSS vector should not be assumed.

Likely exposure

Potential exposure is concentrated in Linux video-capture or embedded systems that initialize the tc358743 driver and associated hardware. Generic servers are less likely affected in practice. The bundle identifies numerous affected kernel releases, but its version data is not expressed as clear ranges; validate distribution backports instead of relying on version-string matching.

Exploitation context

The supplied CVSS vector describes local access with low privileges, low complexity, and no user interaction. No cited source reports active exploitation, and the bundle marks the CVE as absent from KEV. The public evidence also contains no proof-of-concept or exploitation details.

Researcher notes

The bundle provides nine stable-kernel fix commits and Debian LTS advisories, but no CWE, proof-of-concept, exploitation report, or detailed failure primitive. Validate vulnerable code and backports against distribution package sources because the supplied version list is ambiguous. Avoid inferring memory corruption or a specific privilege-escalation mechanism without additional evidence.

Mitigation direction

  • Update to a vendor-supported kernel containing the cited tc358743 registration-order fix.
  • Use distribution advisories to identify fixed packaged kernels and applicable backports.
  • Prioritize systems that initialize TC358743 hardware or permit untrusted local users.
  • If updating is delayed, consult vendor guidance; the bundle specifies no supported compensating control.

Validation and detection

  • Inventory exact running kernel and distribution package versions.
  • Determine whether the tc358743 driver is configured, loaded, and associated hardware is present.
  • Compare installed packages with vendor advisories and the cited stable-kernel fixes.
  • After updating, confirm the fixed kernel is running and the device initializes normally.
Prepared
Confidence
medium
Sources
6

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-2024-35830 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
12Source 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
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2024-35830Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux4c5211a100399c3823563193dd881dcb3b7d24fc, 4c5211a100399c3823563193dd881dcb3b7d24fc, 4c5211a100399c3823563193dd881dcb3b7d24fc, 4c5211a100399c3823563193dd881dcb3b7d24fc, 4c5211a100399c3823563193dd881dcb3b7d24fc, 4c5211a100399c3823563193dd881dcb3b7d24fc, 4c5211a100399c3823563193dd881dcb3b7d24fc, 4c5211a100399c3823563193dd881dcb3b7d24fc, 4c5211a100399c3823563193dd881dcb3b7d24fcunaffected
LinuxLinux4.3, 0, 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9affected
Weakness

CWE details

No CWE listed

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