ALSA-2026:83525
Important: lrzsz security, bug fix, and enhancement update
Published Oct 15, 2026 · updated Oct 15, 2026
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 [almalinux-8.10.z] (JIRA:AlmaLinux-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.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 15, 2026 · OSV.dev
Detected
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 execu
Oct 15, 2026 · OSV.dev
Fix available
lrzsz fixed in 0.12.20-46.el8_10
Oct 15, 2026 · OSV.dev
Fix available
lrzsz fixed in 0.12.20-46.el8_10
Oct 15, 2026 · OSV.dev
Updated
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 execu
Affected
- AlmaLinux:8 lrzsz0 → 0.12.20-46.el8_10