CVE-2021-34373

Information disclosure via TLK heap overflow

Published Jun 30, 2021 · Updated Aug 4, 2024

Heap overflow in Trusty TLK in NVIDIA Jetson TX1 before r32.5.1 allows local users with high privileges to disclose data or cause denial of service. Missing heap hardening in the NVIDIA TLK kernel permits heap overflows that can expose memory or destabilize the trusted kernel. Exploitation requires local high privileges and has no reported integrity impact.

CVSS severity7.9
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap overflow in Trusty TLK in NVIDIA Jetson TX1 before r32.5.1 allows local users with high privileges to disclose data or cause denial of service. Missing heap hardening in the NVIDIA TLK kernel permits heap overflows that can expose memory or destabilize the trusted kernel. Exploitation requires local high privileges and has no reported integrity impact.

The record

CVE
CVE-2021-34373
Published
Jun 30, 2021
Updated
Aug 4, 2024
Vendor
DPDK Project
Product
NVIDIA Jetson TX1
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All Jetson Linux versions prior to r32.5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

DPDK Project · NVIDIA Jetson TX1version=All Jetson Linux versions prior to r32.5.1

Published CVSS scores

7.9NVIDIACVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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