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medium5.5

CVE-2022-49832

In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map Here is the BUG re…

Impact

In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map Here is the BUG report by KASAN about null pointer dereference: BUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50 Read of size 1 at addr 0000000000000000 by task python3/2640 Call Trace: strcmp __of_find_property of_find_property pinctrl_dt_to_map kasprintf() would return NULL pointer when kmalloc() fail to allocate. So directly return ENOMEM, if kasprintf() return NULL pointer.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 3.5 before 4.9.334
from 4.10 before 4.14.300
from 4.15 before 4.19.267
from 4.20 before 5.4.225
from 5.5 before 5.10.156
from 5.11 before 5.15.80

Weakness classification

CWE-476

References