[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.125396] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.128690] random: sshd: uninitialized urandom read (32 bytes read) [ 25.629869] random: sshd: uninitialized urandom read (32 bytes read) [ 26.534983] random: sshd: uninitialized urandom read (32 bytes read) [ 26.701063] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.60' (ECDSA) to the list of known hosts. [ 32.190975] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program [ 32.293898] ================================================================== [ 32.301449] BUG: KASAN: slab-out-of-bounds in pdu_read+0x90/0xd0 [ 32.307587] Read of size 8962 at addr ffff8801b307866d by task syz-executor653/4452 [ 32.315397] [ 32.317021] CPU: 1 PID: 4452 Comm: syz-executor653 Not tainted 4.18.0-rc6+ #165 [ 32.324443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.333866] Call Trace: [ 32.336451] dump_stack+0x1c9/0x2b4 [ 32.340086] ? dump_stack_print_info.cold.2+0