Red Hat alert RHSA-2026:61581-01 (tar)

An update for tar is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of
Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

The GNU tar program can save multiple files in an archive and restore files
from an archive.

Security Fix(es):

* tar: tar: Hidden file injection via crafted archives (CVE-2026-5704)

* tar: tar: TOCTOU in incremental dumpdir 'X' rename handling allows restore
path escape (CVE-2026-18477)

* tar: tar: --one-top-level hardlink targets not confined to top-level
directory enabling arbitrary file overwrite (CVE-2026-18508)

Bug Fix(es) and Enhancement(s):

* tar: --one-top-level with absolute path fails [rhel-9] (JIRA:RHEL-144021)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

This content is licensed under the Creative Commons Attribution 4.0
International License (https://creativecommons.org/licenses/by/4.0/). If you
distribute this content, or a modified version of it, you must provide
attribution to Red Hat Inc. and provide a link to the original.

Original: https://access.redhat.com/security/data/csaf/v2/advisories/2026/rhsa-2026_61581.json