CVE-2022-50670

Summary

In the Linux kernel, the following vulnerability has been resolved:

mmc: omap_hsmmc: fix return value check of mmc_add_host()

mmc_add_host() may return error, if we ignore its return value, it will lead two issues:

  1. The memory that allocated in mmc_alloc_host() is leaked.
  2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del().

Fix this by checking the return value and goto error path wihch will call mmc_free_host().

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxa45c6cb816474cefe56059fce422a9bdcd77e0dc < f153c9e15f8961bdf38707853e15b42ea7c691d9affected
LinuxLinuxa45c6cb816474cefe56059fce422a9bdcd77e0dc < fb3d596267a98813a7a8206097d8d46c98505a0daffected
LinuxLinuxa45c6cb816474cefe56059fce422a9bdcd77e0dc < 62005dfcc396424db3337a1dc3ab49623537f5e5affected
LinuxLinuxa45c6cb816474cefe56059fce422a9bdcd77e0dc < a5f8a4583280a76e50329b910e91ef1dea1e6c79affected
LinuxLinuxa45c6cb816474cefe56059fce422a9bdcd77e0dc < 4e1dc24bcfc8257f24c0663badec7e4f3ae80558affected
LinuxLinuxa45c6cb816474cefe56059fce422a9bdcd77e0dc < a525cad241c339ca00bf7ebf03c5180f2a9b767caffected
LinuxLinux2.6.29affected
LinuxLinux0 < 2.6.29unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References