libcap vulnerability
Summary
USN-8193-1 fixed a vulnerability in libcap. This update provides the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: Ali Raza discovered that libcap incorrectly handled file capability updates. A local attacker could possibly use this issue to inject or strip capabilities into arbitrary executables and escalate privileges. Affected Ubuntu releases: 20.04, 18.04, 16.04, 14.04. CVEs: CVE-2026-4878.
- Ubuntu 20.04
- Ubuntu 18.04
- Ubuntu 16.04
- Ubuntu 14.04
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
Mitigation checklist
- Apply available updates: `sudo apt update && sudo apt upgrade` (a standard system update installs the fix).
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
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