medium6.2
CVE-2021-33640
After tar_close(), libtar.c releases the memory pointed to by pointer t.
Impact
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).
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openatom | Openeuler | Versions 20.03, 22.03 |
| Fedoraproject | Fedora | Versions 36, 37 |
Weakness classification
References
- NVD record
- CVE.org record
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S4PJRCJLEAWN2EKXGLSOBTL7O57V7NC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WX5YE66CT7Y5C2HTHXSFDKQWYWYWJ2T/
- https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageName=libtar
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S4PJRCJLEAWN2EKXGLSOBTL7O57V7NC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WX5YE66CT7Y5C2HTHXSFDKQWYWYWJ2T/
- https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageName=libtar