CVE-2022-40762

TEE kernel crash via unchecked reallocation size

Published Sep 16, 2022 · Updated Aug 3, 2024

Excessive memory allocation in Samsung mTower 0.3.0 and earlier allows attackers to crash the TEE kernel through TEE_Realloc. TEE_Realloc passes an unchecked attacker-controlled newSize value to tee_user_mem_realloc, which attempts an excessive reallocation. Code execution as a trusted application is required, and successful exploitation interrupts the device's trusted execution environment.

CVSS severity7.5
High
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Excessive memory allocation in Samsung mTower 0.3.0 and earlier allows attackers to crash the TEE kernel through TEE_Realloc. TEE_Realloc passes an unchecked attacker-controlled newSize value to tee_user_mem_realloc, which attempts an excessive reallocation. Code execution as a trusted application is required, and successful exploitation interrupts the device's trusted execution environment.

The record

CVE
CVE-2022-40762
Published
Sep 16, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-770, T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

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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