CVE-2021-33645
High
Published: 10 August 2022
Published
10 August 2022
Modified
03 November 2025
KEV Added
—
Patch
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CVSS Score v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0022
44.6th percentile
Risk Priority
15
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-33645 is a high-severity Missing Release of Memory after Effective Lifetime (CWE-401) vulnerability in Openatom Openeuler. Its CVSS base score is 7.5 (High).
Operationally, ranked at the 44.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-20322
Vulnerability details
The th_read() function doesn’t free a variable t->th_buf.gnu_longlink after allocating memory, which may cause a memory leak.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
feep
libtar
≤ 1.2.21
openatom
openeuler
20.03, 22.03
fedoraproject
fedora
35, 36, 37
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.