This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-105842 →

DEBIAN-CVE-2026-105842

lrzsz before 0.13.0 contains a heap-based buffer overflow vulnerability in procheader() of the lrz receive utility when copying overlong sender-suppli...

Original description

The description as published by the source.

lrzsz before 0.13.0 contains a heap-based buffer overflow vulnerability in procheader() of the lrz receive utility when copying overlong sender-supplied filenames into Pathname. Malicious ZMODEM senders can supply filenames up to 8192 bytes, overflowing the buffer via sprintf() in pipe mode or strcpy() to corrupt heap memory and crash lrz.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 lrzsz

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 lrzsz

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 lrzsz

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.21rc-5"}]}]

References

advisory security-tracker.debian.org