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.
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
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| sos · Debian 14 | 4.12.0-2 | DEBIAN-CVE-2026-79655 | Aug 25, 2026 |
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