https://bugzilla.suse.com/show_bug.cgi?id=1228234 Bug ID: 1228234 Summary: SSH Client crashes with option GSSAPIKeyExchange enabled Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.6 Hardware: x86-64 OS: SUSE Other Status: NEW Severity: Major Priority: P5 - None Component: Other Assignee: screening-team-bugs@suse.de Reporter: luedtke@in.tum.de QA Contact: qa-bugs@suse.de Target Milestone: --- Found By: --- Blocker: --- Hello everyone, I updated 15.5 to 15.6 some days ago after that I noticed that ssh connection doesnt work anymore. I as I found out, as long as GSSAPIKeyExchange option is on the ssh client crashes. Versions on System: opnessh 9.6p1 - 150600.6.9.1 openssh-clients 9.6p1 - 150600.6.9.1 Debug Info of SSH Session: OpenSSH_9.6p1, OpenSSL 3.1.4 24 Oct 2023 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 20: Applying options for * debug2: resolving "XXXXX" port 22 debug3: resolve_host: lookup files:22 debug3: channel_clear_timeouts: clearing debug3: ssh_connect_direct: entering debug1: Connecting to files [X.X.X.X] port 22. debug3: set_sock_tos: set socket 3 IP_TOS 0x10 debug1: Connection established. debug1: Local version string SSH-2.0-OpenSSH_9.6 debug1: Remote protocol version 2.0, remote software version OpenSSH_8.4 debug1: compat_banner: match: OpenSSH_8.4 pat OpenSSH* compat 0x04000000 debug2: fd 3 setting O_NONBLOCK debug1: Authenticating to XXXX:22 as 'USER' debug3: Trying to reverse map address X.X.X.X. debug1: Offering GSSAPI proposal: gss-gex-sha1-toWM5Slw5Ew8Mqkay+al2g==,gss-group14-sha1-toWM5Slw5Ew8Mqkay+al2g==,gss-gex-sha1-eipGX3TCiQSrx573bT1o1Q==,gss-group14-sha1-eipGX3TCiQSrx573bT1o1Q== Speicherzugriffsfehler (Speicherabzug geschrieben) Workaround: If you turn off GSSAPIKeyExchange in /etc/ssh/ssh_config (or else you turned it on) everything works fine (even with Kerberos) -- You are receiving this mail because: You are on the CC list for the bug.