{"id":"CLSA-2026-1792933338","summary":"openssh: Fix of 4 CVEs","details":"- CVE-2026-106555: sshd kept GSSAPI client state from a partially completed\n  authentication attempt and could reuse it in a later attempt; reset it before\n  each attempt. Backport upstream commits 670510d1 and d549f99d.\n- CVE-2026-106553: sshd stored delegated GSSAPI credentials even when GSSAPI\n  user authorization had not succeeded; store them only after it succeeds.\n  Backport upstream commit 6f9cd19a.\n- CVE-2026-106583: ssh(1) accepted '$' and '\\' in a command-line user name,\n  allowing injection via shell-expanded commands; reject both characters.\n  Backport upstream commit 0c4c9a7b.\n- CVE-2026-106585: a compressed packet could inflate far beyond the maximum\n  packet size and exhaust memory; reject it once the decompressed payload\n  reaches PACKET_MAX_SIZE. Backport upstream commit e0f85d83.","modified":"2026-10-26T09:43:21.381947076Z","published":"2026-10-25T13:02:31Z","upstream":["CVE-2026-106553","CVE-2026-106555","CVE-2026-106583","CVE-2026-106585"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/centos8.4els/CLSA-2026-1792933338.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106553"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106555"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106583"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106585"}],"affected":[{"package":{"name":"openssh","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/openssh?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0p1-6.el8_4.2.tuxcare.els15"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1792933338.json"}},{"package":{"name":"openssh-askpass","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/openssh-askpass?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0p1-6.el8_4.2.tuxcare.els15"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1792933338.json"}},{"package":{"name":"openssh-cavs","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/openssh-cavs?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0p1-6.el8_4.2.tuxcare.els15"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1792933338.json"}},{"package":{"name":"openssh-clients","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/openssh-clients?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0p1-6.el8_4.2.tuxcare.els15"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1792933338.json"}},{"package":{"name":"openssh-keycat","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/openssh-keycat?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0p1-6.el8_4.2.tuxcare.els15"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1792933338.json"}},{"package":{"name":"openssh-ldap","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/openssh-ldap?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0p1-6.el8_4.2.tuxcare.els15"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1792933338.json"}},{"package":{"name":"openssh-server","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/openssh-server?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0p1-6.el8_4.2.tuxcare.els15"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1792933338.json"}},{"package":{"name":"pam_ssh_agent_auth","ecosystem":"TuxCare:CentOS:8.4","purl":"pkg:rpm/tuxcare/pam_ssh_agent_auth?distro=centos-8.4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.3-7.6.el8_4.1.tuxcare.els15"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1792933338.json"}}],"schema_version":"1.9.0"}