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

regulator: max20086: fix invalid memory access

max20086_parse_regulators_dt() calls of_regulator_match() using an
array of struct of_regulator_match allocated on the stack for the
matches argument.

of_regulator_match() calls devm_of_regulator_put_matches(), which calls
devres_alloc() to allocate a struct devm_of_regulator_matches which will
be de-allocated using devm_of_regulator_put_matches().

struct devm_of_regulator_matches is populated with the stack allocated
matches array.

If the device fails to probe, devm_of_regulator_put_matches() will be
called and will try to call of_node_put() on that stack pointer,
generating the following dmesg entries:

max20086 6-0028: Failed to read DEVICE_ID reg: -121
kobject: '\xc0$\xa5\x03' (000000002cebcb7a): is not initialized, yet
kobject_put() is being called.

Followed by a stack trace matching the call flow described above.

Switch to allocating the matches array using devm_kcalloc() to
avoid accessing the stack pointer long after it's out of scope.

This also has the advantage of allowing multiple max20086 to probe
without overriding the data stored inside the global of_regulator_match.

https://git.kernel.org/stable/c/5578ab04bd7732f470fc614bbc0a924900399fb8

https://git.kernel.org/stable/c/6b0cd72757c69bc2d45da42b41023e288d02e772

https://git.kernel.org/stable/c/6ba30f7aa2c550b2ac04f16b81a19a8c045b8660

https://git.kernel.org/stable/c/7bddac8603d4e396872c2fbf4403ec08e7b1d7c8

https://git.kernel.org/stable/c/d2a9a92bb4cc7568cff68241b0051dc7268bdc68