CVE-2022-49678

Summary

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

soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe

of_find_matching_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.

In brcmstb_init_sram, it pass dn to of_address_to_resource(), of_address_to_resource() will call of_find_device_by_node() to take reference, so we should release the reference returned by of_find_matching_node().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0b741b8234c86065fb6954d32d427b3f7e14756f < 4f5877bdf7b593e988f1924f4c3df6523f80b39caffected
LinuxLinux0b741b8234c86065fb6954d32d427b3f7e14756f < 734a4d15142bb4c8ecad2d8ec70d7564e78ae34daffected
LinuxLinux0b741b8234c86065fb6954d32d427b3f7e14756f < 30bbfeb480ae8b5ee43199d72417b232590440c2affected
LinuxLinux0b741b8234c86065fb6954d32d427b3f7e14756f < 10ba9d499a9fd82ed40897e734ba19870a879407affected
LinuxLinux0b741b8234c86065fb6954d32d427b3f7e14756f < dcafd5463d8f20c4f90ddc138a5738adb99f74c8affected
LinuxLinux0b741b8234c86065fb6954d32d427b3f7e14756f < 37d838de369b07b596c19ff3662bf0293fdb09eeaffected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux4.19.250 <= 4.19.*unaffected
LinuxLinux5.4.202 <= 5.4.*unaffected
LinuxLinux5.10.127 <= 5.10.*unaffected
LinuxLinux5.15.51 <= 5.15.*unaffected
LinuxLinux5.18.8 <= 5.18.*unaffected
LinuxLinux5.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References