{"id":"DEBIAN-CVE-2026-18938","details":"A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability. By sending specially crafted messages, the attacker can cause the system to miscalculate memory allocation for nested attributes. This leads to a memory corruption issue, specifically a heap out-of-bounds write, which can crash the p11-kit RPC parsing process, resulting in a Denial of Service (DoS). This vulnerability is only exploitable on 32 bit systems.","modified":"2026-09-14T17:02:38.299930327Z","published":"2026-08-07T09:16:58.670Z","upstream":["CVE-2026-18938"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-18938"}],"affected":[{"package":{"name":"p11-kit","ecosystem":"Debian:12","purl":"pkg:deb/debian/p11-kit?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.24.1-2","0.24.1-2+loong64","0.25.0-1","0.25.0-2","0.25.0-3","0.25.0-4","0.25.0-5","0.25.1-1","0.25.10-1","0.25.2-1","0.25.3-1","0.25.3-2","0.25.3-3","0.25.3-4","0.25.3-5","0.25.5-1","0.25.5-2","0.25.5-3","0.25.9-1","0.25.9-2","0.26.2-1","0.26.2-2","0.26.2-3","0.26.4-1","0.26.5-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18938.json"}},{"package":{"name":"p11-kit","ecosystem":"Debian:13","purl":"pkg:deb/debian/p11-kit?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.25.10-1","0.25.5-3","0.25.9-1","0.25.9-2","0.26.2-1","0.26.2-2","0.26.2-3","0.26.4-1","0.26.5-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18938.json"}},{"package":{"name":"p11-kit","ecosystem":"Debian:14","purl":"pkg:deb/debian/p11-kit?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.26.5-1"}]}],"versions":["0.25.10-1","0.25.5-3","0.25.9-1","0.25.9-2","0.26.2-1","0.26.2-2","0.26.2-3","0.26.4-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18938.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}