kernel: net/smc: fix illegal rmb_desc access in SMC-D connection dump

A flaw was found in the Linux kernel in which functions providing information about SMC-D connections caused a NULL pointer dereference. This flaw allows an attacker with permission to read this information to cause a denial of service...

DEBIAN-CVE-2021-46925

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix kernel panic caused by race of smcsock A crash occurs when smccdctxhandler tries to access smcsock but smcrelease has already freed it. 4570.695099 BUG: unable to handle page fault for address: 000000002eae9e88...