CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's BPF (Berkeley Packet Filter) subsystem, specifically concerning exclusive maps that are intended to be accessed only by specific programs. Due to a flaw in the iterator's binding process, unauthorized programs can access and write to these exclusive maps, potentially leading to data corruption or unauthorized modifications. Organizations utilizing Linux systems with BPF functionality should prioritize addressing this vulnerability to mitigate risks associated with unauthorized access and data integrity breaches.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps for bpf_map_elem iterators Exclusive maps (aka excl_prog_hash) are meant to be reachable only from the single program whose hash matches. This is enforced by check_map_prog_compatibility() when the map is referenced from a program such as signed BPF loaders. A bpf_map_elem iterator, however, binds its target map at attach time in bpf_iter_attach_map() instead of referencing it from the program, so the exclusivity check is never reached. On top of that, the iterator exposes the map value as a writable buffer.