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CVE-2021-33641

Date: January 20, 2023

When processing files, malloc stores the data of the current line. When processing comments, malloc incorrectly accesses the released memory (use after free).

Severity Score

Related Resources (4)

https://gitee.com/src-openeuler/byacc/commit/50225f48c6b53e9d7c936681a06682404cb8ec4d
https://nvd.nist.gov/vuln/detail/CVE-2021-33641
https://access.redhat.com/security/cve/CVE-2021-33641
https://www.mend.io/vulnerability-database/CVE-2021-33641

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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