CVE-2021-20193

low
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
2.5

Description

A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-20193

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-20193.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202102-41

OS impact

OSVersionStatusFixed in
arch archfixed1.34-1
suse slesaffected
debian debianbookwormfixed1.34+dfsg-1
debian debianbullseyefixed1.34+dfsg-1
debian debianforkyfixed1.34+dfsg-1
debian debiansidfixed1.34+dfsg-1
debian debiantrixiefixed1.34+dfsg-1

References

Verify integrity in audit chain (admin only). AS-IS.