CVE-2021-27439

TencentOS-tiny Integer Overflow or Wraparound

Published May 3, 2022 CVSS 3.1 · 7.3 High EPSS 1.6% KEV · Not listed
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.

Remediation

Vendor Solution

TencentOS-tiny update available

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-14193 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Apr 16, 2025, 4:24 PM
Reserved
Feb 19, 2021, 12:00 AM
Status
Modified
Published
May 3, 2022, 9:15 PM
Modified
Jun 17, 2026, 3:44 AM