High severity7.3NVD Advisory· Published May 3, 2022· Updated Jun 17, 2026
CVE-2021-27439
CVE-2021-27439
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.
Affected products
2- Range: =3.1.0
- TencentOS-tiny/TencentOS-tinyv5Range: 3.1.0
Patches
Vulnerability mechanics
References
1- www.cisa.gov/uscert/ics/advisories/icsa-21-119-04nvdThird Party AdvisoryUS Government Resource
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