cve 2026 23265

CVE-2026-23265 is a security vulnerability in the Linux kernel's F2FS filesystem related to node footer validation during asynchronous I/O completion. The issue allows a corrupted node footer to bypass checks in read and write end-io paths, potentially triggering a kernel bug during page writeback. A hardening patch adds explicit sanity checks on the node footer in both read_end_io and write_end_io to prevent bad metadata from persisting. This tag covers discussions and updates about the CVE, including patch details and implications for system stability and security.