{"id":"USN-8193-1","summary":"libcap2 vulnerability","details":"Ali Raza discovered that libcap incorrectly handled file capability\nupdates. A local attacker could possibly use this issue to inject or strip\ncapabilities into arbitrary executables and escalate privileges.","modified":"2026-04-29T09:53:20.641115Z","published":"2026-04-21T15:45:29Z","related":["UBUNTU-CVE-2026-4878"],"upstream":["CVE-2026-4878","UBUNTU-CVE-2026-4878"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8193-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-4878"}],"affected":[{"package":{"name":"libcap2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libcap2@1:2.44-1ubuntu0.22.04.3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.44-1ubuntu0.22.04.3"}]}],"versions":["1:2.44-1build1","1:2.44-1build2","1:2.44-1build3","1:2.44-1ubuntu0.22.04.1","1:2.44-1ubuntu0.22.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libcap2","binary_version":"1:2.44-1ubuntu0.22.04.3"},{"binary_name":"libcap2-bin","binary_version":"1:2.44-1ubuntu0.22.04.3"},{"binary_name":"libpam-cap","binary_version":"1:2.44-1ubuntu0.22.04.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8193-1.json","cves_map":{"cves":[{"id":"CVE-2026-4878","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"libcap2","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libcap2@1:2.66-5ubuntu2.4?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.66-5ubuntu2.4"}]}],"versions":["1:2.66-4ubuntu1","1:2.66-5ubuntu1","1:2.66-5ubuntu2","1:2.66-5ubuntu2.1","1:2.66-5ubuntu2.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libcap2","binary_version":"1:2.66-5ubuntu2.4"},{"binary_name":"libcap2-bin","binary_version":"1:2.66-5ubuntu2.4"},{"binary_name":"libpam-cap","binary_version":"1:2.66-5ubuntu2.4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8193-1.json","cves_map":{"cves":[{"id":"CVE-2026-4878","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:24.04:LTS"}}},{"package":{"name":"libcap2","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libcap2@1:2.75-7ubuntu2.2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.75-7ubuntu2.2"}]}],"versions":["1:2.73-4ubuntu1","1:2.75-7ubuntu1","1:2.75-7ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-kernel-pub-linux-libs-security-libcap-dev","binary_version":"1:2.75-7ubuntu2.2"},{"binary_name":"libcap2","binary_version":"1:2.75-7ubuntu2.2"},{"binary_name":"libcap2-bin","binary_version":"1:2.75-7ubuntu2.2"},{"binary_name":"libpam-cap","binary_version":"1:2.75-7ubuntu2.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8193-1.json","cves_map":{"cves":[{"id":"CVE-2026-4878","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:25.10"}}}],"schema_version":"1.7.5"}