CVE-2026-63817

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate compress cache inode only when enabled F2FSCOMPRESSINO uses NMIsbi-maxnid as the synthetic inode number for the compressed page cache inode. That inode only exists when the compresscache mount option is enabled. Wh...

CVE-2026-63816

CVE-2026-63816 describes a Linux kernel issue in F2FS where the UAF can occur during garbage collection when handling f2fs_inode_info.atomic_inode. The public descriptions across NVD, SUSE, OSVs, Debian/OSV indicate the code path: gc_data_segment → ra_data_block(cow_inode) → mapping = F2FS_I(inod...

EUVD-2026-45482

In the Linux kernel, the following vulnerability has been resolved: f2fs: atomic: fix UAF issue on f2fsinodeinfo.atomicinode - ioctlF2FSIOCGARBAGECOLLECTRANGE - shrink - f2fsgc - gcdatasegment - radatablockcowinode - mapping = F2FSIinode-atomicinode-imapping : f2fsiscowfilecowinode is true -...

CVE-2026-63814

CVE-2026-63814 (Linux kernel, f2fs) is resolved. A malformed ACL in f2fs_acl_from_disk() could bypass proper length checks because f2fs_acl_count() only validates the aggregate ACL xattr length, allowing ACL_USER/ACL_GROUP entries to be read before a full entry fits. The fix adds checks: require ...

CVE-2026-63813

Summary: CVE-2026-63813 relates to the Linux kernel and a revert of a previous f2fs change in move_data_block that could cause page-cache/folio handling race conditions. The embedded details describe a race where the GC path can evict the tail-end folio from the page cache, drop page-cache refere...

CVE-2026-63811

In the Linux kernel, the following vulnerability has been resolved: f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fswritebegin may read the previously written data back from the COW inode: prepareatomicwritebegin locates the block in the COW...

EUVD-2026-45478

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix incorrect FINOEXTENT handling in destroyextentnode When destroyextentnode sets the inode flag FINOEXTENT, it does not reset the length of the largest extent to 0 and update the inode folio. Since modifications to the...

CVE-2026-63808

CVE-2026-63808 (Linux kernel exFAT): The vulnerability is a potential use-after-free in exfat_find_dir_entry() where a buffer_head is freed before all reads on the TYPE_EXTEND path, leading to a read from invalid memory. The root cause is brelse(bh) occurring before ep is no longer dereferenced; ...

CVE-2026-63800 pNFS: Fix use-after-free in pnfs_update_layout()

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfsupdatelayout When hitting the NFSLAYOUTRETURN branch in pnfsupdatelayout, the code calls pnfspreparetoretrylayoutgetlo. If it succeeds, pnfsputlayouthdrlo is called before tracepnfsupdatelayout,...

CVE-2026-63800

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfsupdatelayout When hitting the NFSLAYOUTRETURN branch in pnfsupdatelayout, the code calls pnfspreparetoretrylayoutgetlo. If it succeeds, pnfsputlayouthdrlo is called before tracepnfsupdatelayout,...

CVE-2026-63796

CVE-2026-63796 concerns the Linux kernel’s OCFS2 filesystem. The issue arises when a malicious group descriptor can claim a bg_size/bg_bits pair that exceeds the on-disk group bitmap capacity, allowing bitmap scans and bit updates to run past bg_bitmap. The fix adds a physical-capacity check (bas...

EUVD-2026-45462

In the Linux kernel, the following vulnerability has been resolved: ocfs2: reject oversized group bitmap descriptors ocfs2validategdparent only bounds bgbits against the parent allocator's chain geometry. A malicious descriptor can still claim a bgsize/bgbits pair that exceeds the bitmap bytes th...

CVE-2026-63793 ntfs: serialize volume label accesses

In the Linux kernel, the following vulnerability has been resolved: ntfs: serialize volume label accesses Protect vol-volumelabel with a mutex and snaphost the label before copytouser. This prevent a use-after-free when FSIOCSETFSLABEL replaces the vol-volumelabel and FSIOCGETTSLABEL reads it...

CVE-2026-53399 nfsd: release layout stid on setlease failure

In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4allocstid publishes the new stid into cl-clstateids via idralloccyclic under cllock before returning to nfsd4alloclayoutstateid. When nfsd4layoutsetlease then fails, the error pat...

CVE-2026-53399

In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4allocstid publishes the new stid into cl-clstateids via idralloccyclic under cllock before returning to nfsd4alloclayoutstateid. When nfsd4layoutsetlease then fails, the error pat...

CVE-2026-53399

In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4allocstid publishes the new stid into cl-clstateids via idralloccyclic under cllock before returning to nfsd4alloclayoutstateid. When nfsd4layoutsetlease then fails, the error pat...

CVE-2026-53398

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix SECINFONONAME decode error cleanup nfsd4decodesecinfononame currently initializes sinexp after decoding sinstyle. If the XDR stream is truncated, the decoder returns nfserrbadxdr before sinexp is initialized. Since comm...

CVE-2026-53398

CVE-2026-53398 (Linux kernel, NFSD) has a concrete fix for a decode error in SECINFO_NO_NAME handling within NFS (nfsd4_decode_secinfo_no_name). A truncated XDR stream could cause nfserr_bad_xdr to occur before sin_exp is initialized, leaving stale union contents and triggering an incorrect relea...

CVE-2026-53396 nfsd: fix posix_acl leak and ignored error in nfsd4_create_file

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix posixacl leak and ignored error in nfsd4createfile nfsd4createfile has two bugs in its ACL handling: The return value of nfsd4acltoattr is silently discarded. When the NFSv4-to-POSIX ACL conversion fails e.g., -EINVAL f...

CVE-2026-53397 nfsd: fix posix_acl leak on SETACL decode failure

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix posixacl leak on SETACL decode failure nfsaclsvcdecodesetaclargs and nfs3svcdecodesetaclargs each call nfsstreamdecodeacl twice, first for NFSACL and then for NFSDFACL. Each successful call transfers ownership of a...