CVE-2021-47095

In the Linux kernel, the following vulnerability has been resolved: ipmi:
ssif: initialize ssif_info->client early During probe ssif_info->client is
dereferenced in error path. However, it is set when some of the error
checking has already been done. This causes following kernel crash if an
error path is taken: [ 30.645593][ T674] ipmi_ssif 0-000e: ipmi_ssif: Not
probing, Interface already present [ 30.657616][ T674] Unable to handle
kernel NULL pointer dereference at virtual address 0000000000000088 … [
30.657723][ T674] pc : __dev_printk+0x28/0xa0 [ 30.657732][ T674] lr :
_dev_err+0x7c/0xa0 … [ 30.657772][ T674] Call trace: [ 30.657775][ T674]
__dev_printk+0x28/0xa0 [ 30.657778][ T674] _dev_err+0x7c/0xa0 [ 30.657781][
T674] ssif_probe+0x548/0x900 [ipmi_ssif
62ce4b08badc1458fd896206d9ef69a3c31f3d3e] [ 30.657791][ T674]
i2c_device_probe+0x37c/0x3c0 … Initialize ssif_info->client before any
error path can be taken. Clear i2c_client data in the error path to prevent
the dangling pointer from leaking.