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medium5.5

CVE-2024-49954

In the Linux kernel, the following vulnerability has been resolved: static_call: Replace pointless WARN_ON() in static_call_module_notify() static_call_module_…

Impact

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().

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.10 before 5.15.168
from 5.16 before 6.1.113
from 6.2 before 6.6.55
from 6.7 before 6.10.14
from 6.11 before 6.11.3

References