CVE-2026-89678

A flaw was found in the Linux kernel's Network File System NFS daemon nfsd component. The nfsddirectwrite function, responsible for handling direct writes, incorrectly detects partial writes. This issue occurs because the logic for detecting short writes compares the actual bytes written against ...

CVE-2026-89678

A logic bug in the Linux kernel 's NFS server component (nfsd) affects the nfsd_direct_write() function. The partial-write detection check compares the returned byte count against segments[i].iter.count after vfs_iocb_iter_write() has already advanced the iterator, so it effectively compares agai...