CVE-2026-89492

In the Linux kernel, the following vulnerability has been resolved: ocfs2: validate directory-index entry counts when reading metadata ocfs2validatedxleaf and ocfs2validatedxroot check the ECC and signature of an indexed-directory block before it reaches higher-level callers, but neither validato...

UBUNTU-CVE-2026-89496

In the Linux kernel, the following vulnerability has been resolved: ocfs2: always run deallocs on copy-on-write completion Local fuzzing of 6.12.94 has found the following memory leak caused by doing 'copyfilerange' within the same filesystem: unreferenced object 0xffff88812192c980 size 32: comm...

CVE-2026-89720 ubifs: fix out-of-bounds read in signature length check

In the Linux kernel, the following vulnerability has been resolved: ubifs: fix out-of-bounds read in signature length check ubifssbverifysignature bounds the on-disk ubifssignode-len field before handing the signature payload to verifypkcs7signature, but the check has the wrong sign: if...

CVE-2026-89654

In the Linux kernel, the following vulnerability has been resolved: ceph: fix UAF in checknewmap on session freed during unlock checknewmap iterates mdsc-sessions and for each active session drops mdsc-mutex to perform per-session operations. The forced-close path rank removed from map correctly...

CVE-2026-89652 ceph: bound copied dentry name length in NFS export get_name

In the Linux kernel, the following vulnerability has been resolved: ceph: bound copied dentry name length in NFS export getname cephgetname copies the MDS-supplied name into the caller's NAMEMAX-sized buffer with memcpyname, rinfo-dname, rinfo-dnamelen and then writes namerinfo-dnamelen = 0,...

CVE-2026-89648

CVE-2026-89648 affects the Linux kernel Ceph client in the function ceph_parse_deleg_inos(). When decoding delegated-inode intervals from an MDS create-with-delegation reply, the 64-bit len field is fully attacker-controlled and was previously unbounded. A malicious or compromised Ceph MDS can se...

CVE-2026-89647

In the Linux kernel, the following vulnerability has been resolved: ceph: do not repeat cephtrimdentries if no progress possible cephcapreclaimwork re-queues itself for as long as cephtrimdentries returns -EAGAIN, which happens whenever a lease walk exhausts its nrtoscan budget. This creates a bu...

CVE-2026-89647 ceph: do not repeat ceph_trim_dentries() if no progress possible

In the Linux kernel, the following vulnerability has been resolved: ceph: do not repeat cephtrimdentries if no progress possible cephcapreclaimwork re-queues itself for as long as cephtrimdentries returns -EAGAIN, which happens whenever a lease walk exhausts its nrtoscan budget. This creates a bu...

CVE-2026-89647 ceph: do not repeat ceph_trim_dentries() if no progress possible

In the Linux kernel, the following vulnerability has been resolved: ceph: do not repeat cephtrimdentries if no progress possible cephcapreclaimwork re-queues itself for as long as cephtrimdentries returns -EAGAIN, which happens whenever a lease walk exhausts its nrtoscan budget. This creates a bu...

EUVD-2026-76559

In the Linux kernel, the following vulnerability has been resolved: ceph: do not repeat cephtrimdentries if no progress possible cephcapreclaimwork re-queues itself for as long as cephtrimdentries returns -EAGAIN, which happens whenever a lease walk exhausts its nrtoscan budget. This creates a bu...

CVE-2026-89647

CVE-2026-89647 affects the Linux kernel's Ceph file system . The function ceph_cap_reclaim_work() enters a busy loop by re-queuing itself whenever ceph_trim_dentries() returns -EAGAIN, which occurs when a lease walk exhausts its scan budget with no cap pressure and all leases still valid. The dir...

EUVD-2026-76557

In the Linux kernel, the following vulnerability has been resolved: btrfs: drop recovered reloc root refs on recovery failure During relocation recovery, each fs root gets a reference to its relocation root. If loading or adding a later root fails, or if the first transaction commit fails,...

EUVD-2026-76558

In the Linux kernel, the following vulnerability has been resolved: ceph: fix leaked inode reference on writeback abort at umount cephdirtyfolio takes a wrbuffer claim on each newly dirtied folio: it bumps iwrbufferref taking an ihold on the 0-1 transition and attaches the snapcontext to...

CVE-2026-89641 cifs: clear tcon after cifsFileInfo_put() in cifs_file_set_size()

In the Linux kernel, the following vulnerability has been resolved: cifs: clear tcon after cifsFileInfoput in cifsfilesetsize When the else branch of cifsfilesetsize finds a writable file handle via findwritablefile, it borrows tcon and server from the handle's tlink, attempts the handle-based...

CVE-2026-89642

In the Linux kernel, the following vulnerability has been resolved: cifs: call pagecacheisizeextended in cifssetsize when extending cifssetsize calls truncatepagecache but skips pagecacheisizeextended on extension. truncatesetsize shows the correct pattern: isizewriteinode, newsize; if newsize...

CVE-2026-89639

This vulnerability affects the Linux kernel's CIFS (Common Internet File System) implementation. When a file is opened with O_TRUNC , the function cifs_do_truncate() is invoked without holding i_rwsem, preventing it from performing a proper fscache cookie resize . As a result, stale cached data c...

CVE-2026-89639 cifs: use cifs_invalidate_cache() in cifs_do_truncate() for O_TRUNC

In the Linux kernel, the following vulnerability has been resolved: cifs: use cifsinvalidatecache in cifsdotruncate for OTRUNC cifsdotruncate is invoked from cifsopen without irwsem, so it cannot use cifsresizefilelocked to perform a proper fscache cookie resize. Instead, add cifsinvalidatecache...

CVE-2026-89617 fs/ntfs3: validate dirty page table on log replay

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: validate dirty page table on log replay Each DIRPAGEENTRY ends in a pagelcns array whose length is the on-disk lcnsfollow field. checkrstbl validates the table bookkeeping but never checks that this array fits in the...

CVE-2026-89615 fs/ntfs3: bound page_lcns[] index by the log record

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: bound pagelcns index by the log record The copylcns loop and the redo shorten loop index pagelcns at j + i, where i runs up to the log record's lcnsfollow. That count is checked only against the record's own length, not...

CVE-2026-89613 ntfs: reject invalid empty mapping pairs

In the Linux kernel, the following vulnerability has been resolved: ntfs: reject invalid empty mapping pairs Reject an attribute with empty mapping pairs if it has inconsistent highest VCN and size...