Link Following Affecting sosreport package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.21% (11th percentile)

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  • Snyk IDSNYK-UBUNTU2204-SOSREPORT-19384567
  • published19 Sept 2026
  • disclosed25 Aug 2026

Introduced: 25 Aug 2026

CVE-2026-79655  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:22.04 sosreport.

NVD Description

Note: Versions mentioned in the description apply only to the upstream sosreport package and not the sosreport package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

A flaw was found in sos clean, a utility within the sos package. This vulnerability allows a local attacker to perform arbitrary file creation or overwrite. By crafting a malicious tar archive, an attacker can exploit a path traversal issue during tar extraction, where symlink and hardlink targets are not properly validated. This enables the attacker to write files to arbitrary locations on the system with the privileges of the sos clean process, which often runs as root.

CVSS Base Scores

version 3.1