Medium [CVE-2026-108119 +1] tar extraction-root escape via deferred symlink/hardlink creation bypasses CVE-2026-26158 fix
This medium-severity Red Hat Linux advisory covers CVE-2026-108119 and CVE-2026-26158; related products: Red Hat Hardened Images, Red Hat Enterprise Linux 6, Red Hat package: busybox.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 2 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
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Summary
tar extraction-root escape via deferred symlink/hardlink creation bypasses CVE-2026-26158 fix. Red Hat rates this moderate (CVSS 6.3).
Weakness: CWE-59. Red Hat lists fixing advisory RHSA-2026:81391 with package busybox-main-1.37.0-9.4.hum1.
Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat package: busybox.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
- busybox-main-1.37.0-9.4.hum1
- RHSA-2026:81391
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
Mitigation checklist
- Avoid extracting tar archives from untrusted sources using busybox, especially with elevated privileges or into a directory that will be reused for a subsequent extraction. If untrusted archives must be processed, extract into a freshly created, isolated directory with minimal privileges on a single filesystem boundary and discard it (including any links left on disk) after each extraction.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
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