{"id":"USN-7849-1","summary":"libssh vulnerability","details":"Philippe Antoine discovered that libssh did not properly manage memory\nwhen calculating a session id during the key exchange process. An attacker\ncould possibly use this issue to cause libssh to crash, resulting in a\ndenial of service.","modified":"2026-06-25T13:32:31.248025603Z","published":"2025-11-04T09:36:34Z","related":["UBUNTU-CVE-2025-8114"],"upstream":["CVE-2025-8114","UBUNTU-CVE-2025-8114"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7849-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-8114"}],"affected":[{"package":{"name":"libssh","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libssh?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.3-4.3ubuntu0.6+esm3"}]}],"versions":["0.6.3-3ubuntu3","0.6.3-4.1","0.6.3-4.2","0.6.3-4.2ubuntu1","0.6.3-4.3","0.6.3-4.3ubuntu0.1","0.6.3-4.3ubuntu0.2","0.6.3-4.3ubuntu0.5","0.6.3-4.3ubuntu0.6","0.6.3-4.3ubuntu0.6+esm1","0.6.3-4.3ubuntu0.6+esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libssh-4","binary_version":"0.6.3-4.3ubuntu0.6+esm3"},{"binary_name":"libssh-gcrypt-4","binary_version":"0.6.3-4.3ubuntu0.6+esm3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2025-8114","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"score":"low","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7849-1.json"}},{"package":{"name":"libssh","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libssh?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"}]}],"versions":["0.7.5-1","0.8.0~20170825.94fa1e38-1","0.8.0~20170825.94fa1e38-1build1","0.8.0~20170825.94fa1e38-1ubuntu0.1","0.8.0~20170825.94fa1e38-1ubuntu0.2","0.8.0~20170825.94fa1e38-1ubuntu0.5","0.8.0~20170825.94fa1e38-1ubuntu0.6","0.8.0~20170825.94fa1e38-1ubuntu0.7","0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3","0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"libssh-4","binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"},{"binary_name":"libssh-gcrypt-4","binary_version":"0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"}],"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:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2025-8114"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7849-1.json"}},{"package":{"name":"libssh","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libssh?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.3-2ubuntu2.5+esm2"}]}],"versions":["0.9.0-1ubuntu1","0.9.0-1ubuntu4","0.9.0-1ubuntu5","0.9.3-2ubuntu1","0.9.3-2ubuntu2","0.9.3-2ubuntu2.1","0.9.3-2ubuntu2.2","0.9.3-2ubuntu2.3","0.9.3-2ubuntu2.4","0.9.3-2ubuntu2.5","0.9.3-2ubuntu2.5+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libssh-4","binary_version":"0.9.3-2ubuntu2.5+esm2"},{"binary_name":"libssh-gcrypt-4","binary_version":"0.9.3-2ubuntu2.5+esm2"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7849-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"id":"CVE-2025-8114","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"score":"low","type":"Ubuntu"}]}]}}},{"package":{"name":"libssh","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libssh?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.6-2ubuntu0.22.04.5"}]}],"versions":["0.9.6-1","0.9.6-1build1","0.9.6-2","0.9.6-2build1","0.9.6-2ubuntu0.22.04.1","0.9.6-2ubuntu0.22.04.2","0.9.6-2ubuntu0.22.04.3","0.9.6-2ubuntu0.22.04.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libssh-4","binary_version":"0.9.6-2ubuntu0.22.04.5"},{"binary_name":"libssh-gcrypt-4","binary_version":"0.9.6-2ubuntu0.22.04.5"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-8114","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"score":"low","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7849-1.json"}},{"package":{"name":"libssh","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libssh?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.6-2ubuntu0.2"}]}],"versions":["0.10.5-3ubuntu1","0.10.5-3ubuntu2","0.10.6-2","0.10.6-2build1","0.10.6-2build2","0.10.6-2ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.10.6-2ubuntu0.2","binary_name":"libssh-4"},{"binary_name":"libssh-gcrypt-4","binary_version":"0.10.6-2ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"id":"CVE-2025-8114","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"low"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7849-1.json"}},{"package":{"name":"libssh","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libssh?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.2-1ubuntu0.1"}]}],"versions":["0.11.1-1","0.11.1-2","0.11.2-1","0.11.2-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.11.2-1ubuntu0.1","binary_name":"libssh-4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7849-1.json","cves_map":{"ecosystem":"Ubuntu:25.10","cves":[{"id":"CVE-2025-8114","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}]}}}],"schema_version":"1.7.5"}