{"id":"CLSA-2026-1786549709","summary":"libssh: Fix of 3 CVEs","details":"- CVE-2026-59845: check the fork() return code when starting a ProxyCommand\n  so a failed fork is not stored as pid -1 and later killed as a process group\n- CVE-2026-59843: reject a maximum packet size of 0 in SSH2_MSG_CHANNEL_OPEN and\n  SSH2_MSG_CHANNEL_OPEN_CONFIRMATION and clamp channel writes on remote_maxpacket\n  directly, avoiding the non-progressing loop in channel_write_common()\n- CVE-2026-59848: track outstanding SFTP request IDs and reject responses\n  carrying an unknown ID instead of queueing them indefinitely","modified":"2026-10-26T09:43:39.693400007Z","published":"2026-08-12T15:48:42Z","upstream":["CVE-2026-59843","CVE-2026-59845","CVE-2026-59848"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1786549709.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59843"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59845"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59848"}],"affected":[{"package":{"name":"libssh","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/libssh?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.4-15.el9_6.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1786549709.json"}},{"package":{"name":"libssh-config","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/libssh-config?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.4-15.el9_6.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1786549709.json"}},{"package":{"name":"libssh-devel","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/libssh-devel?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.4-15.el9_6.tuxcare.els10"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1786549709.json"}}],"schema_version":"1.9.0"}