CVE-2026-98124 smb/client: invalidate fscache for fallocate range operations

In the Linux kernel, the following vulnerability has been resolved: smb/client: invalidate fscache for fallocate range operations smb3zerorange, smb3punchhole, smb3insertrange, and smb3collapserange modify file contents through server-side range operations. These operations discard the affected...

CVE-2026-98124

In the Linux kernel, the following vulnerability has been resolved: smb/client: invalidate fscache for fallocate range operations smb3zerorange, smb3punchhole, smb3insertrange, and smb3collapserange modify file contents through server-side range operations. These operations discard the affected...

CVE-2026-98124

The Linux kernel contains a vulnerability in the smb/client component where specific server-side range operations—smb3_zero_range() , smb3_punch_hole() , smb3_insert_range() , and smb3_collapse_range() —fail to properly invalidate the FS-Cache . While these operations discard the affected page ca...

CVE-2026-98124 smb/client: invalidate fscache for fallocate range operations

In the Linux kernel, the following vulnerability has been resolved: smb/client: invalidate fscache for fallocate range operations smb3zerorange, smb3punchhole, smb3insertrange, and smb3collapserange modify file contents through server-side range operations. These operations discard the affected...

EUVD-2026-86955

In the Linux kernel, the following vulnerability has been resolved: smb/client: invalidate fscache for fallocate range operations smb3zerorange, smb3punchhole, smb3insertrange, and smb3collapserange modify file contents through server-side range operations. These operations discard the affected...

CVE-2026-97565 smb: client: reject short READ responses in CIFSSMBRead()

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject short READ responses in CIFSSMBRead CIFSSMBRead reads DataLengthHigh, DataLength and DataOffset out of the READRSP returned by the server without first checking that a whole READRSP was actually received. The...

CVE-2026-97563 smb: client: reject out-of-bounds DataOffset in CIFSSMBRead()

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject out-of-bounds DataOffset in CIFSSMBRead The SMB1 synchronous read helper CIFSSMBRead validates the server's DataLength against CIFSMaxBufSize and the caller's count, but never validates DataOffset. The copy...

CVE-2026-97564 smb: client: reject userspace cifs.idmap descriptions

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.idmap descriptions cifs.idmap key descriptions carry authority-bearing fields owner and group SIDs and uid/gid values in "os:"/"gs:"/"oi:"/"gi:" form that the cifs.idmap upcall helper treats as...

CVE-2026-97562 smb: client: pin DFS superblock in iterator callback

In the Linux kernel, the following vulnerability has been resolved: smb: client: pin DFS superblock in iterator callback tconsupercb stores a raw superblock pointer, but cifsgetsuper takes its active reference only after iteratesuperstype has dropped sumount and its passive reference. Concurrent...

CVE-2026-97561 smb: client: honor forceuid/forcegid when mapping SIDs to uid/gid

In the Linux kernel, the following vulnerability has been resolved: smb: client: honor forceuid/forcegid when mapping SIDs to uid/gid When the administrator mounts with forceuid or forcegid uid=/gid= mount options, they expect all files to appear owned by the specified user/group. However, severa...

CVE-2026-97561 smb: client: honor forceuid/forcegid when mapping SIDs to uid/gid

In the Linux kernel, the following vulnerability has been resolved: smb: client: honor forceuid/forcegid when mapping SIDs to uid/gid When the administrator mounts with forceuid or forcegid uid=/gid= mount options, they expect all files to appear owned by the specified user/group. However, severa...

EUVD-2026-86870

In the Linux kernel, the following vulnerability has been resolved: smb: client: pin DFS superblock in iterator callback tconsupercb stores a raw superblock pointer, but cifsgetsuper takes its active reference only after iteratesuperstype has dropped sumount and its passive reference. Concurrent...

CVE-2026-97561

The Linux kernel contains a vulnerability where the SMB client fails to honor forceuid and forcegid mount options. Specifically, the functions smb311_posix_info_to_fattr(), cifs_posix_to_fattr(), and parse_sec_desc() unconditionally called sid_to_id(), allowing server-provided values to overwrite...

CVE-2026-97562 smb: client: pin DFS superblock in iterator callback

In the Linux kernel, the following vulnerability has been resolved: smb: client: pin DFS superblock in iterator callback tconsupercb stores a raw superblock pointer, but cifsgetsuper takes its active reference only after iteratesuperstype has dropped sumount and its passive reference. Concurrent...

EUVD-2026-86869

In the Linux kernel, the following vulnerability has been resolved: smb: client: honor forceuid/forcegid when mapping SIDs to uid/gid When the administrator mounts with forceuid or forcegid uid=/gid= mount options, they expect all files to appear owned by the specified user/group. However, severa...

CVE-2026-97560

The Linux kernel contains a one-byte out-of-bounds (OOB) read vulnerability within the smb2_parse_native_symlink() function of the SMB client. The flaw occurs when parsing a share-root relative native symlink, where memcpy copies smb_target+1 (skipping the leading separator) but incorrectly uses ...

CVE-2026-97560 smb: client: fix one-byte OOB read in smb2_parse_native_symlink()

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix one-byte OOB read in smb2parsenativesymlink When parsing a share-root relative native symlink, memcpy copies smbtarget+1 skipping the leading separator but uses strlensmbtarget+1 as the length, reading one byte...

CVE-2026-97559

The Linux kernel contains a vulnerability in the SMB client where the functions replace_sids_and_copy_aces() and set_chmod_dacl() incorrectly use a u16 accumulator to track DACL size. This causes an integer wraparound when the rewritten DACL exceeds 64K (specifically reaching a wraparound with 86...

CVE-2026-97558

The Linux kernel contains a vulnerability in the SMB client where a cifsFileInfo reference leak occurs during a deferred close operation. The issue stems from a race condition in cifs_close(): if deferred_close_scheduled becomes false while work is pending, subsequent cifs_open() calls may reuse ...

CVE-2026-97558 smb: client: fix cifsFileInfo reference leak in deferred close

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix cifsFileInfo reference leak in deferred close When cifsclose defers a close, it hands the cifsFileInfo reference of the closing struct file to the queued work. Each execution of smb2deferredworkclose drops one su...