CVE-2021-27439

TencentOS-tiny Integer Overflow or Wraparound

State: Published
Severity: 7.3 High
Published: May 3, 2022
Updated: Apr 16, 2025
Reserved: Feb 19, 2021

Description

TencentOS-tiny version 3.1.0 is vulnerable to integer wrap-around in function 'tos_mmheap_alloc incorrect calculation of effective memory allocation size. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	icscert

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
TencentOS-tinyTencentOS-tiny	3.1.0Affected

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04

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