What happened
In the Linux kernel, the following vulnerability has been resolved: bpf: Guard __get_user acesss with access_ok for uprobe_multi data As reported by sashiko [1] we need to use access_ok to check the user space data bounds before we use __get-user to get it. [1] https://lore.kernel.org/bpf/20260610145235.CB1441F00893@smtp.kernel.org/
Affected versions
Linux: 89ae89f53d201143560f1e9ed4bfa62eee34f88e through before ff6c5ee77dcc98381290d16af53f6262625870a6 (git); 89ae89f53d201143560f1e9ed4bfa62eee34f88e through before 2c387db784293256d35fd3d438f577cc82bb823d (git); 89ae89f53d201143560f1e9ed4bfa62eee34f88e through before a9f1395028c2bbe18e57864cc355c11faff488cb (git); 89ae89f53d201143560f1e9ed4bfa62eee34f88e through before c6d51ad36490013ee9df94a372d3bf794bd304d1 (git); 89ae89f53d201143560f1e9ed4bfa62eee34f88e through before 4d87a251d45b4a95eb4c0abcfab809c9f231258a (git); 6.6 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.