Disclosure summary
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.
Source-reported weakness categories
CWE-401, CWE-125
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2021-20193
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| gnu | tar | * {"versionEndIncluding":"1.33"} |
Original records & references
- NIST NVD record
- CVE Program record
- bugzilla.redhat.com — Issue Tracking, Patch, Third Party Advisory
- git.savannah.gnu.org — Mailing List, Patch, Third Party Advisory
- savannah.gnu.org — Issue Tracking, Patch, Vendor Advisory
- security.gentoo.org — Third Party Advisory
- bugzilla.redhat.com — Issue Tracking, Patch, Third Party Advisory
- git.savannah.gnu.org — Mailing List, Patch, Third Party Advisory
- savannah.gnu.org — Issue Tracking, Patch, Vendor Advisory
- security.gentoo.org — Third Party Advisory
PUBLISHED 2021-03-26T13:15:12-04:00
MODIFIED 2026-10-08T17:17:33-04:00
INGESTED 2026-10-10T20:50:20-04:00