{"id":"USN-8707-1","summary":"opencryptoki vulnerabilities","details":"It was discovered that primitive decoders in openCryptoki produced integer\nunderflows when the encoded length was zero. An attacker could possibly use\nthis issue to trigger out-of-bounds reads. (CVE-2026-40253)\n\nIt was discovered that openCryptoki incorrectly handled symlinks. An\nattacker in the token-group could possibly use this issue to achieve\nprivilege escalation or access sensitive information. (CVE-2026-23893)\n\nIt was discovered that the CKM_ECDH_AES_KEY_WRAP implementation had a heap\nbuffer overflow vulnerability. An attacker could possibly use this issue to\ntrigger heap corruption, or denial-of-service. (CVE-2026-22791)","modified":"2026-09-02T02:41:27.745827216Z","published":"2026-08-31T15:49:17Z","related":["UBUNTU-CVE-2026-22791","UBUNTU-CVE-2026-23893","UBUNTU-CVE-2026-40253"],"upstream":["CVE-2026-22791","CVE-2026-23893","CVE-2026-40253","UBUNTU-CVE-2026-22791","UBUNTU-CVE-2026-23893","UBUNTU-CVE-2026-40253"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8707-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-22791"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-23893"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-40253"}],"affected":[{"package":{"name":"opencryptoki","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/opencryptoki?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.26.0+dfsg-0ubuntu1.1"}]}],"versions":["3.25.0+dfsg-0ubuntu1","3.26.0+dfsg-0ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libopencryptoki0","binary_version":"3.26.0+dfsg-0ubuntu1.1"},{"binary_name":"opencryptoki","binary_version":"3.26.0+dfsg-0ubuntu1.1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"id":"CVE-2026-22791","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-23893","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-40253"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8707-1.json"}}],"schema_version":"1.9.0"}