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VULNERABILITIES

CVE-2021-33640 Details

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).

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References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S4PJRCJLEAWN2EKXGLSOBTL7O57V7NC/ CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WX5YE66CT7Y5C2HTHXSFDKQWYWYWJ2T/ CVE
https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageName=libtar CVEVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S4PJRCJLEAWN2EKXGLSOBTL7O57V7NC/ [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WX5YE66CT7Y5C2HTHXSFDKQWYWYWJ2T/ [email protected]

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-416Use After Free[email protected]
CWE-416Use After Free[email protected]

Affected Products

ProductVersions
openatom openeuler
20.03 sp1
20.03 sp2
22.03

CPE

  • cpe:2.3:o:openatom:openeuler:20.03:sp1:*:*:lts:*:*:*
  • cpe:2.3:o:openatom:openeuler:20.03:sp2:*:*:lts:*:*:*
  • cpe:2.3:o:openatom:openeuler:22.03:*:*:*:lts:*:*:*

Remediation

  • No remediation found in references.
fedoraproject fedora
36
37

CPE

  • cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

12 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-33640
NVD Published Date:
Dec 19, 2022
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]