Issued at: 2026-10-26
Updated at: 2026-10-28
Advisory content derived from Red Hat RHSA-2026:89755, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: lrzsz security, bug fix, and enhancement update
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-9.8.z] (JIRA:Rocky Linux-282108)
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.