CVE-2021-33646

libtar: memory leak found in th_read() function

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · August 10, 2022

Updated · November 21, 2025

Description

A flaw was found in libtar. This security vulnerability occurs because the th_read() function in libtar doesn’t free a variable t->th_buf.gnu_longname after allocating memory, which may cause a memory leak.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-401 · Missing Release of Memory after Effective Lifetime