CVE-2026-64156

In the Linux kernel, CVE-2026-64156 concerns netfs and AFS writepath handling. The fix adjusts netfs_write_single() to return 1 when a write is skipped due to lock contention and WB_SYNC_NONE, and updates afs_single_writepages() to skip as well. If a skip occurs, the inode must be re-marked since...