In the Linux kernel, the following vulnerability has been resolved: HSI: ssiprotocol: fix potential resource leak in ssippnopen() ssippnopen() claims the HSI client's port with hsiclaimport(). When hsiregisterportevent() gets some error and returns a negetive value, the HSI client's port should be released with hsireleaseport(). Fix it by calling hsireleaseport() when hsiregisterport_event() fails.