CVE-2021-33640 Information

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).

Reference

https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageName=libtar