{"id":"USN-8687-1","summary":"p11-kit vulnerabilities","details":"It was discovered that p11-kit incorrectly handled certain RPC messages. A\nlocal attacker could use this issue to cause p11-kit to crash, resulting in\na denial of service. (CVE-2026-13757)\n\nIt was discovered that p11-kit incorrectly handled nested attribute\ndecoding on 32-bit systems. A local attacker could use this issue to cause\np11-kit to crash, resulting in a denial of service. (CVE-2026-18938)","modified":"2026-08-31T17:26:23.914986011Z","published":"2026-08-27T15:20:16Z","related":["UBUNTU-CVE-2026-13757","UBUNTU-CVE-2026-18938"],"upstream":["CVE-2026-13757","CVE-2026-18938","UBUNTU-CVE-2026-13757","UBUNTU-CVE-2026-18938"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8687-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-13757"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-18938"}],"affected":[{"package":{"name":"p11-kit","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/p11-kit?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.23.9-2ubuntu0.1+esm1"}]}],"versions":["0.23.7-3","0.23.9-2","0.23.9-2ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libp11-kit0","binary_version":"0.23.9-2ubuntu0.1+esm1"},{"binary_name":"p11-kit","binary_version":"0.23.9-2ubuntu0.1+esm1"},{"binary_version":"0.23.9-2ubuntu0.1+esm1","binary_name":"p11-kit-modules"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-13757"},{"id":"CVE-2026-18938","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8687-1.json"}},{"package":{"name":"p11-kit","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/p11-kit?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.23.20-1ubuntu0.1+esm1"}]}],"versions":["0.23.17-2","0.23.18.1-2","0.23.19-2","0.23.20-1","0.23.20-1build1","0.23.20-1ubuntu0.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libp11-kit0","binary_version":"0.23.20-1ubuntu0.1+esm1"},{"binary_name":"p11-kit","binary_version":"0.23.20-1ubuntu0.1+esm1"},{"binary_name":"p11-kit-modules","binary_version":"0.23.20-1ubuntu0.1+esm1"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-13757"},{"id":"CVE-2026-18938","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8687-1.json"}},{"package":{"name":"p11-kit","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/p11-kit?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.24.0-6ubuntu0.1"}]}],"versions":["0.23.22-1build1","0.24.0-5","0.24.0-6","0.24.0-6build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libp11-kit0","binary_version":"0.24.0-6ubuntu0.1"},{"binary_name":"p11-kit","binary_version":"0.24.0-6ubuntu0.1"},{"binary_version":"0.24.0-6ubuntu0.1","binary_name":"p11-kit-modules"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-13757","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-18938","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8687-1.json"}},{"package":{"name":"p11-kit","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/p11-kit?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.25.3-4ubuntu2.2"}]}],"versions":["0.25.0-4ubuntu1","0.25.3-2ubuntu2","0.25.3-4ubuntu1","0.25.3-4ubuntu2","0.25.3-4ubuntu2.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.25.3-4ubuntu2.2","binary_name":"libp11-kit0"},{"binary_version":"0.25.3-4ubuntu2.2","binary_name":"p11-kit"},{"binary_version":"0.25.3-4ubuntu2.2","binary_name":"p11-kit-modules"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2026-13757","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-18938","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8687-1.json"}}],"schema_version":"1.9.0"}