A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary and, when combined with a preexisting symbolic link under the working directory, may allow writing outside that boundary during a single extraction.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade tar | Oct 11, 2026 | Aug 31, 2026 |
| Redhat_linux | — | Upgrade tarUpgrade tar-debuginfoUpgrade tar-debugsourceNo solution exists | Aug 5, 2026 | Jul 31, 2026 |
| Rocky_linux | — | Upgrade tar-debugsourceUpgrade tarUpgrade tar-debuginfo | Sep 2, 2026 | Sep 1, 2026 |
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