CVE-2022-1271: Debian Linux

High severity, CVSS 8.8. EPSS: 5.1% chance of exploitation in the next 30 days.

An arbitrary file write vulnerability was found in GNU gzip's zgrep utility. When zgrep is applied on the attacker's chosen file name (for example, a crafted file name), this can overwrite an attacker's content to an arbitrary attacker-selected file. This flaw occurs due to insufficient validation when processing filenames with two or more newlines where selected content and the target file names are embedded in crafted multi-line file names. This flaw allows a remote, low privileged attacker to force zgrep to write arbitrary files on the system.

Affected products

• Debian Debian Linux: version 10.0 only
• GNU Gzip: before 1.12 (fixed in 1.12)
• Red Hat JBoss Data Grid: version 7.0.0 only
• Tukaani Xz: before 5.2.5 (fixed in 5.2.5)

Published 2022-08-31. Last modified 2026-06-17.