CVE-2026-98681

In the Linux kernel, the following vulnerability has been resolved: smb: client: split cifsFileInfo bitfields to avoid shared-byte RMW races The invalidHandle, swapfile, oplockbreakcancelled, offload, and statusfiledeleted fields are stored in the same bitfield byte in struct cifsFileInfo, but ar...

CVE-2026-98450

In the Linux kernel, the following vulnerability has been resolved: smb: client: close completed creates on compound wait errors compoundsendrecv waits for responses in order. If a later wait is interrupted, or if a later MID fails during response synchronization, an earlier CREATE may already ha...

CVE-2026-98454

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix create context out-of-bounds reads smb2parsecontexts validates the complete create-context area but does not limit each record to its Next field before dispatching it. A malformed chain can therefore expose bytes...

CVE-2026-98686 smb: client: discard post-EOF pagecache when extending a file via zero range

In the Linux kernel, the following vulnerability has been resolved: smb: client: discard post-EOF pagecache when extending a file via zero range smb3zerorange removed the pagecache only for the range being zeroed, so when it extends the file the folio straddling the old EOF - which may hold data...

CVE-2026-98686

The Linux kernel contains a vulnerability in the smb client component where smb3_zero_range() fails to discard the pagecache for folios straddling the old EOF when extending a file via a zero range. This allows data dirtied past the EOF—potentially through an mmap —to remain in the pagecache and ...

CVE-2026-98685

The Linux kernel contains a vulnerability in the smb client where the cifs_remap_file_range() function fails to correctly discard the pagecache when extending a file via a clone range. Specifically, folios straddling the old EOF (which might contain data dirtied past the EOF via an mmap ) were no...

CVE-2026-98685 smb: client: discard post-EOF pagecache when extending a file via clone range

In the Linux kernel, the following vulnerability has been resolved: smb: client: discard post-EOF pagecache when extending a file via clone range cifsremapfilerange discarded the pagecache only for the folios overlapping the destination region, so when a clone extends the file the folio straddlin...

CVE-2026-98684

The Linux kernel contains a vulnerability in the smb3_simple_fallocate_range() function's emulation of mode 0 / FALLOC_FL_KEEP_SIZE for small interior ranges. The issue arises because the system issues FSCTL_QUERY_ALLOCATED_RANGES and zero-fills reported unallocated holes to force block allocatio...

CVE-2026-98684 smb: client: flush and commit data before querying allocated ranges

In the Linux kernel, the following vulnerability has been resolved: smb: client: flush and commit data before querying allocated ranges The mode 0 / FALLOCFLKEEPSIZE fallocate emulation for small interior ranges in smb3simplefallocaterange issues FSCTLQUERYALLOCATEDRANGES and zero-fills any...

CVE-2026-98454

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix create context out-of-bounds reads smb2parsecontexts validates the complete create-context area but does not limit each record to its Next field before dispatching it. A malformed chain can therefore expose bytes...

EUVD-2026-103694

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix create context out-of-bounds reads smb2parsecontexts validates the complete create-context area but does not limit each record to its Next field before dispatching it. A malformed chain can therefore expose bytes...

CVE-2026-98454

The Linux kernel contains an out-of-bounds read vulnerability within the smb client component. The smb2_parse_contexts() function fails to limit each record to its Next field before dispatching, allowing a malformed chain to expose bytes beyond the current context. Additionally, the QFid handler ...

CVE-2026-98454 smb: client: fix create context out-of-bounds reads

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix create context out-of-bounds reads smb2parsecontexts validates the complete create-context area but does not limit each record to its Next field before dispatching it. A malformed chain can therefore expose bytes...

CVE-2026-98452 smb: client: clean up failed cached directory opens

In the Linux kernel, the following vulnerability has been resolved: smb: client: clean up failed cached directory opens opencacheddir sends CREATE and QUERYINFO as a compound request. If the CREATE succeeds but a later command returns an error, the function must retain the CREATE FID so common...

CVE-2026-98452

The Linux kernel contains a vulnerability in the SMB client where open_cached_dir() fails to properly handle compound requests. Specifically, if a CREATE succeeds but a subsequent command in the compound request returns an error, the system fails to retain the CREATE FID for proper cleanup using ...

CVE-2026-98451 smb: client: use finish_no_open() for non-regular inodes

In the Linux kernel, the following vulnerability has been resolved: smb: client: use finishnoopen for non-regular inodes An OCREAT open can find an existing symlink or another non-regular inode. cifsatomicopen calls finishopen on it and attaches a cifsFileInfo. Symlink inodes have no CIFS release...

CVE-2026-98451

The Linux kernel contains a vulnerability in the SMB client where an O_CREAT open operation on an existing symlink or non-regular inode causes a dentry reference leak . This occurs because cifs_atomic_open() calls finish_open() on these inodes, but symlink inodes lack a CIFS release operation. Th...

CVE-2026-98405

A flaw was found in the Linux kernel's SMB Server Message Block client. When parsing POSIX security identifiers in server responses, the client fails to properly validate the server-supplied buffer length against the actual received message boundaries. A malicious or compromised SMB server could...

Linux Distros Unpatched Vulnerability : CVE-2026-98405

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: smb: client: fix missing iov bounds check in parseposixsids In parseposixsids, sidsbufend is...

windows-smb-vulnerability-framework-cve-2025-33073

Windows SMB Client Vulnerability Research Framework Author: cyberseallll Created: 2025 Overview I developed this research framework to analyze and understand CVE-2025-33073, a critical Windows SMB Client Elevation of Privilege vulnerability. This implementation provides comprehensive tools for...