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CVE Record

CVE-2021-34382: Trusty TLK contains a vulnerability in the NVIDIA TLK kernel’s tz_map_shared_mem function where an integer...

Trusty TLK contains a vulnerability in the NVIDIA TLK kernel’s tz_map_shared_mem function where an integer overflow on the size parameter causes the request buffer and the logging buffer to overflow, allowing writes to arbitrary addresses within the kernel.

MediumCVSS 6.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This vulnerability affects NVIDIA Jetson TX1 devices running Jetson Linux versions before r32.5.1. A low-privileged local attacker, with user interaction, could trigger memory corruption inside NVIDIA’s TLK kernel and potentially gain control over kernel memory. It is not remotely exploitable based on the provided CVSS data.

Executive priority

Treat this as a targeted embedded-device risk, not a broad perimeter emergency. Prioritize remediation for Jetson TX1 devices in sensitive, shared, or physically accessible environments, especially where local users or third-party workloads are present.

Technical view

CVE-2021-34382 is an integer overflow in Trusty TLK’s NVIDIA TLK kernel tz_map_shared_mem function. Overflowing the size parameter can overflow request and logging buffers, allowing writes to arbitrary kernel addresses. CVSS 3.1 scores it 6.7 with local attack vector, high complexity, low privileges, user interaction, and high confidentiality, integrity, and availability impact.

Likely exposure

Exposure appears limited to NVIDIA Jetson TX1 systems running Jetson Linux versions prior to r32.5.1. Risk is most relevant where untrusted local users, applications, or device workflows can interact with affected TLK functionality.

Exploitation context

The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates local access, high attack complexity, low privileges, and required user interaction, reducing broad internet-scale urgency.

Researcher notes

Key constraints are important: AV:L, AC:H, PR:L, UI:R, S:U. The impact is severe after successful exploitation, but the access conditions narrow practical exposure. Public details in the provided bundle do not include exploit maturity, proof-of-concept status, or mitigations beyond the version boundary.

Mitigation direction

  • Inventory Jetson TX1 devices and record Jetson Linux versions.
  • Upgrade affected Jetson Linux deployments to r32.5.1 or later where supported.
  • Review NVIDIA advisory guidance before applying production changes.
  • Restrict local access to affected devices until remediation is complete.
  • Remove or isolate untrusted workloads on vulnerable Jetson TX1 systems.

Validation and detection

  • Confirm whether each device is NVIDIA Jetson TX1.
  • Verify Jetson Linux version is r32.5.1 or later.
  • Check build images and recovery media for pre-r32.5.1 versions.
  • Document any devices that cannot be upgraded.
  • Track remediation against NVIDIA advisory a_id/5205.
Prepared
Confidence
high
Sources
3

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-2021-34382 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.7 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/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
0Timeline events
0ADP providers
2Source links

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
6.7CVSS 3.1MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H0.85.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.7Medium
CVSS 3.1 vector shape for CVE-2021-34382Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
NVIDIANVIDIA Jetson TX1All Jetson Linux versions prior to r32.5.1Listed
Weakness

CWE details

No CWE listed

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