{"id":"RLSA-2026:47757","summary":"Important: openssh security update","details":"OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server.\n\nSecurity Fix(es):\n\n* openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux OpenSSH client versions (CVE-2026-55655)\n\n* openssh: Double free in Rocky Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service (CVE-2026-55653)\n\n* openssh: Heap out-of-bounds read in Rocky Linux versions of OpenSSH GSSAPI indicator cleanup due to missing NULL sentinel termination (CVE-2026-55654)\n\n* openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on the client side (CVE-2026-60002)\n\n* openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy (CVE-2026-59996)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-07-30T12:30:06.784792849Z","published":"2026-07-30T12:06:30.380063Z","upstream":["CVE-2026-55653","CVE-2026-55654","CVE-2026-55655","CVE-2026-59996","CVE-2026-60002"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:47757"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462351"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462250"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2497944"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462493"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2497936"}],"affected":[{"package":{"name":"openssh","ecosystem":"Rocky Linux:10","purl":"pkg:rpm/rocky-linux/openssh?distro=rocky-linux-10&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:9.9p1-25.el10_2.rocky.0.1"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:47757.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}