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I. Basic Information for CVE-2021-33641
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
When processing files, malloc stores the data of the current line. When processing comments, malloc incorrectly accesses the released memory (use after free).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
openEuler byacc 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
byacc是openeuler开源的一个语法分析器生成工具。 openEuler byacc存在安全漏洞，该漏洞源于在处理注释时malloc存在释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-byacc <1.9.20200330 and <2.0.20210808 -
II. Public POCs for CVE-2021-33641
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III. Intelligence Information for CVE-2021-33641
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IV. Related Vulnerabilities
Same product: byacc
Same vendor: n/a
Same weakness: CWE-416
V. Comments for CVE-2021-33641

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