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MEDIUM · 6.2

CVE-2021-33640

After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a res...

Vulnerability Description

After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a result, the released memory is used (use-after-free).

CVSS Score

6.2

MEDIUM

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

Affected Products

VendorProductVersions
OpenatomOpeneuler20.03
FedoraprojectFedora36

Related Weaknesses (CWE)

CWE-416

References

FAQ

What is CVE-2021-33640?

CVE-2021-33640 is a vulnerability with a CVSS score of 6.2 (MEDIUM). After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a res...

How severe is CVE-2021-33640?

CVE-2021-33640 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33640?

Check the references section above for vendor advisories and patch information. Affected products include: Openatom Openeuler, Fedoraproject Fedora.