CVE-2025-21643 | Linux Kernel up to 6.12.9/6.13-rc6 netfs_extract_user_iter buffer overflow

CVE-2025-21643 | Linux Kernel up to 6.12.9/6.13-rc6 netfs_extract_user_iter buffer overflow

A vulnerability classified as critical was found in Linux Kernel up to 6.12.9/6.13-rc6. This vulnerability affects the function netfs_extract_user_iter. The manipulation leads to buffer overflow. This vulnerability was named CVE-2025-21643. Access to the local network is required for this attack to succeed. There is no exploit available. It is recommended to upgrade the affected component.