CVE-2024-41027

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> Fix userfaultfd_api to return EINVAL as expected<br /> <br /> Currently if we request a feature that is not set in the Kernel config we<br /> fail silently and return all the available features. However, the man<br /> page indicates we should return an EINVAL.<br /> <br /> We need to fix this issue since we can end up with a Kernel warning should<br /> a program request the feature UFFD_FEATURE_WP_UNPOPULATED on a kernel with<br /> the config not set with this feature.<br /> <br /> [ 200.812896] WARNING: CPU: 91 PID: 13634 at mm/memory.c:1660 zap_pte_range+0x43d/0x660<br /> [ 200.820738] Modules linked in:<br /> [ 200.869387] CPU: 91 PID: 13634 Comm: userfaultfd Kdump: loaded Not tainted 6.9.0-rc5+ #8<br /> [ 200.877477] Hardware name: Dell Inc. PowerEdge R6525/0N7YGH, BIOS 2.7.3 03/30/2022<br /> [ 200.885052] RIP: 0010:zap_pte_range+0x43d/0x660