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

static_call: Replace pointless WARN_ON() in static_call_module_notify()

static_call_module_notify() triggers a WARN_ON(), when memory allocation
fails in __static_call_add_module().

That's not really justified, because the failure case must be correctly
handled by the well known call chain and the error code is passed
through to the initiating userspace application.

A memory allocation fail is not a fatal problem, but the WARN_ON() takes
the machine out when panic_on_warn is set.

Replace it with a pr_warn().

kernel.org https://git.kernel.org/stable/c/85a104aaef1f56623acc10ba4c42d5f046ba65b7 [No types assigned]

kernel.org https://git.kernel.org/stable/c/b83bef74c121a3311240fc4002d23486b85355e4 [No types assigned]

kernel.org https://git.kernel.org/stable/c/bc9356513d56b688775497b7ac6f2b967f46a80c [No types assigned]

kernel.org https://git.kernel.org/stable/c/e67534bd31d79952b50e791e92adf0b3e6c13b8c [No types assigned]

kernel.org https://git.kernel.org/stable/c/ea2cdf4da093d0482f0ef36ba971e2e0c7673425 [No types assigned]

kernel.org https://git.kernel.org/stable/c/fe513c2ef0a172a58f158e2e70465c4317f0a9a2 [No types assigned]