CVE-2021-34386

Heap overflow via unchecked calloc multiplication

Published Jun 21, 2021 · Updated Aug 4, 2024

Integer overflow in the Trusty TLK kernel on NVIDIA Jetson TX1 before 32.5.1 allows local users to corrupt heap memory via calloc. The TLK kernel multiplies the requested count and element size without detecting wraparound, allowing an undersized allocation and subsequent heap overflow. Exploitation requires high local privileges, user interaction, a high-complexity condition, and a TX1 configuration using TLK; NVIDIA does not specify the post-overflow behavior.

CVSS severity6.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the Trusty TLK kernel on NVIDIA Jetson TX1 before 32.5.1 allows local users to corrupt heap memory via calloc. The TLK kernel multiplies the requested count and element size without detecting wraparound, allowing an undersized allocation and subsequent heap overflow. Exploitation requires high local privileges, user interaction, a high-complexity condition, and a TX1 configuration using TLK; NVIDIA does not specify the post-overflow behavior.

The record

CVE
CVE-2021-34386
Published
Jun 21, 2021
Updated
Aug 4, 2024
Vendor
DPDK Project
Product
NVIDIA Jetson TX1
Classifications
CWE-190
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 21, 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

6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.3NVIDIA CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/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.

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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

CWE-190Integer Overflow or Wraparound

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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