CVE-2026-89678

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix partial-write detection in nfsddirectwrite nfsddirectwrite walks a list of write segments and, after each vfsiocbiterwrite, tries to detect a short write so the loop can stop before placing the next segment at a wrong...

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...

PT-2026-90394

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix partial-write detection in nfsd direct write nfsd direct write walks a list of write segments and, after each vfs iocb iter write, tries to detect a short write so the loop can stop before placing the next segment at a...

CVE-2022-49068

CVE-2022-49068 — Summary (Linux kernel, btrfs) The issue occurs in btrfs direct IO write path: during get_blocks_direct_write(), temporary delalloc extents are reserved and later released with btrfs_delalloc_release_extents(). If the length is modified in the COW path, fewer extents may be releas...