RHSA-2026:83525 — Security Advisory
Red Hat Security Advisory: lrzsz security, bug fix, and enhancement update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · October 15, 2026
Updated · November 3, 2026
Topic
An update for lrzsz is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. 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.
Description
Lrzsz (consisting of lrz and lsz) is a cosmetically modified zmodem/ymodem/xmodem package built from the public-domain version of the rzsz package. Lrzsz was created to provide a working GNU copylefted Zmodem solution for Linux systems.
Security Fix(es):
-
lrzsz: lrzsz: Arbitrary file overwrite via absolute path traversal in restricted mode (CVE-2026-105840)
-
lrzsz: lrzsz: Arbitrary command execution via crafted file names in pipe mode (CVE-2026-105841)
Bug Fix(es) and Enhancement(s):
- lrzsz: segfault with -s [rhel-8.10.z] (JIRA:RHEL-282148)
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.