CyberRota Analysis
AI-GeneratedA vulnerability in the Linux kernel affects the handling of user space pointers in the BPF subsystem, where the absence of an access_ok check prior to using __get_user could lead to unauthorized memory access. This flaw may allow attackers to exploit memory safety issues, potentially leading to privilege escalation or system instability. Organizations using Linux systems, particularly those leveraging BPF functionalities, should prioritize patching to mitigate potential risks associated with this vulnerability.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Add missing access_ok call to copy_user_syms As reported by sashiko we use __get_user without prior access_ok call on the user space pointer. Adding the missing call for the whole pointer array. Plus removing the err check in the error path, because it's not needed and also we can return -ENOMEM directly from the first kvmalloc_array fail path. [1] https://lore.kernel.org/bpf/20260611115503.AC16D1F00893@smtp.kernel.org/