Smack: slab-out-of-bounds in vsscanf
Add barrier to soob. Return -EOVERFLOW if the buffer is exceeded. Suggested-by: Hillf Danton <hdanton@sina.com> Reported-by: <syzbot+bfdd4a2f07be52351350@syzkaller.appspotmail.com> Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
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