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HIGH · 7.8

CVE-2021-33641

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

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).

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
OpeneulerByacc< 1.9.20200330

Related Weaknesses (CWE)

CWE-416

References

FAQ

What is CVE-2021-33641?

CVE-2021-33641 is a vulnerability with a CVSS score of 7.8 (HIGH). When processing files, malloc stores the data of the current line. When processing comments, malloc incorrectly accesses the released memory (use after free).

How severe is CVE-2021-33641?

CVE-2021-33641 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33641?

Check the references section above for vendor advisories and patch information. Affected products include: Openeuler Byacc.