DEBIAN-CVE-2026-97555

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix heap overflow in DACL owner/group rewrite When idmodetocifsacl rewrites an existing DACL, it allocates a buffer sized according to the on-disk DACL length reported by daclptr-size. However, replacesidsandcopyaces...

UBUNTU-CVE-2026-97558

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...

UBUNTU-CVE-2026-97561

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...

UBUNTU-CVE-2026-97564

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...

UBUNTU-CVE-2026-97555

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix heap overflow in DACL owner/group rewrite When idmodetocifsacl rewrites an existing DACL, it allocates a buffer sized according to the on-disk DACL length reported by daclptr-size. However, replacesidsandcopyaces...

UBUNTU-CVE-2026-97565

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...

UBUNTU-CVE-2026-97559

In the Linux kernel, the following vulnerability has been resolved: smb: client: fail DACL rewrite when the new DACL exceeds 64K replacesidsandcopyaces and setchmoddacl accumulate the size of the DACL they build in a u16. That accumulator can wrap. validatedacl caps numaces at daclsize -...

UBUNTU-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...

UBUNTU-CVE-2026-98127

In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for insert range smb3insertrange does not check if the new file size isize + len is valid. This allows FALLOCFLINSERTRANGE to bypass RLIMITFSIZE, exceed smaxbytes, or produce a size outside the lofft...

UBUNTU-CVE-2026-98126

In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for zero range When FALLOCFLZERORANGE is used without FALLOCFLKEEPSIZE, smb3zerorange may extend EOF without checking RLIMITFSIZE, allowing the file to grow beyond the caller's file-size limit. Fix th...

UBUNTU-CVE-2026-97557

In the Linux kernel, the following vulnerability has been resolved: smb: client: avoid leaking refcount in cifsqueueoplockbreak cifsqueueoplockbreak unconditionally takes a reference on the target file before queueing cifsoplockbreak. Only that work item decreases the reference counter again. If...

UBUNTU-CVE-2026-97554

In the Linux kernel, the following vulnerability has been resolved: smb: client: avoid using uninitialized SIDs in cifsposixtofattr cifsposixtofattr ignores the return value of posixinfoparse. When a malformed POSIX directory entry is encountered e.g. invalid SID lengths from an untrusted server,...

UBUNTU-CVE-2026-98125

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix stale page cache in insert/collapse range smb3insertrange and smb3collapserange use truncatepagecacherange to invalidate the affected page cache. However, if off or oldeof is not page-aligned, the boundary pages a...

CVE-2026-98127

In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for insert range smb3insertrange does not check if the new file size isize + len is valid. This allows FALLOCFLINSERTRANGE to bypass RLIMITFSIZE, exceed smaxbytes, or produce a size outside the lofft...

CVE-2026-98127

A vulnerability in the Linux kernel smb/client allows the smb3_insert_range() function to bypass size limits because it fails to validate the new file size. Specifically, it does not check if i_size + len is valid, enabling FALLOC_FL_INSERT_RANGE to bypass RLIMIT_FSIZE , exceed s_maxbytes , or re...

CVE-2026-98127 smb/client: validate new EOF for insert range

In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for insert range smb3insertrange does not check if the new file size isize + len is valid. This allows FALLOCFLINSERTRANGE to bypass RLIMITFSIZE, exceed smaxbytes, or produce a size outside the lofft...

EUVD-2026-86958

In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for insert range smb3insertrange does not check if the new file size isize + len is valid. This allows FALLOCFLINSERTRANGE to bypass RLIMITFSIZE, exceed smaxbytes, or produce a size outside the lofft...

CVE-2026-98127 smb/client: validate new EOF for insert range

In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for insert range smb3insertrange does not check if the new file size isize + len is valid. This allows FALLOCFLINSERTRANGE to bypass RLIMITFSIZE, exceed smaxbytes, or produce a size outside the lofft...

CVE-2026-98125

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix stale page cache in insert/collapse range smb3insertrange and smb3collapserange use truncatepagecacherange to invalidate the affected page cache. However, if off or oldeof is not page-aligned, the boundary pages a...

EUVD-2026-86957

In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for zero range When FALLOCFLZERORANGE is used without FALLOCFLKEEPSIZE, smb3zerorange may extend EOF without checking RLIMITFSIZE, allowing the file to grow beyond the caller's file-size limit. Fix th...