CVE-2026-79655

Sos: sos: path traversal in sos clean tar extraction via unvalidated symlink/hardlink targets leads to arbitrary file write

CVE-2026-79655 is fixed in sos on 1 platform by DEBIAN-CVE-2026-79655 (version 4.12.0-2), released August 25, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0021
11th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
sos · Debian 14 4.12.0-2 DEBIAN-CVE-2026-79655 Aug 25, 2026

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