CVE-2021-34397

Service interruption via wrong-heap free

Published Jun 22, 2021 · Updated Aug 4, 2024

Invalid memory release in NVIDIA Jetson Linux before 32.5.1 allows local users to interrupt affected devices through MB2. The MB2 bootloader releases memory through the wrong heap, but NVIDIA has not published the triggering input or execution path. Exploitation requires high local privileges and high-complexity conditions; the documented consequence is limited availability loss, not data access or modification.

CVSS severity1.9
Low
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid memory release in NVIDIA Jetson Linux before 32.5.1 allows local users to interrupt affected devices through MB2. The MB2 bootloader releases memory through the wrong heap, but NVIDIA has not published the triggering input or execution path. Exploitation requires high local privileges and high-complexity conditions; the documented consequence is limited availability loss, not data access or modification.

The record

CVE
CVE-2021-34397
Published
Jun 22, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 22, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

1.9NVIDIA CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
2.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P

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

CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

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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