CVE-2026-97566

The Linux kernel contains a vulnerability in the in-kernel MPTCP path manager where removing the id 0 endpoint fails to tear down pending announcements. This asymmetry between the id 0 path and non-zero id paths leaves a stale ADD_ADDR announcement entry alive. When the path manager later reselec...

EUVD-2026-86874

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: kernel: drop pending ADDADDR when removing ID0 The in-kernel MPTCP path manager can leave a stale ADDADDR announcement entry alive when removing the id 0 endpoint. This happens because the id 0 removal path does not te...

CVE-2026-97567

The Linux kernel contains a vulnerability where a race condition can occur between the disconnect() and rtx events within the mptcp component. This race condition can lead to an inconsistent status . The issue is resolved by implementing a synchronous timer stop operation to prevent the concurren...

EUVD-2026-86875

In the Linux kernel, the following vulnerability has been resolved: mptcp: prevent race between disconnect and rtx Sashiko noted that the two event can race, leading to inconsistent status. Prevent the race using the synchronous timer stop operation...

CVE-2026-97565

The Linux kernel contains a vulnerability in the CIFSSMBRead() function where it fails to verify that a complete READ_RSP has been received from a server. Specifically, the code dereferences DataLengthHigh , DataLength , and DataOffset without ensuring the response length is at least read_rsp_siz...

EUVD-2026-86873

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-2026-97564

The Linux kernel contains a vulnerability in the SMB client where the cifs.idmap key type lacks a vet_description hook. This allows userspace to create keys via request_key(2) or add_key(2) containing authority-bearing fields (such as SIDs and uid/gid values) that are improperly treated as kernel...

CVE-2026-97563

The Linux kernel contains a vulnerability in the SMB1 synchronous read helper CIFSSMBRead() . The function fails to validate the DataOffset field, allowing a malicious or compromised SMB1 server to provide a large DataOffset with an in-range DataLength . This can cause memcpy() to read past the e...

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...

EUVD-2026-86871

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-2026-97563 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...

EUVD-2026-86872

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...

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-2026-97562

The Linux kernel contains a vulnerability in the smb client where a race condition exists during DFS automount expiry . Specifically, tcon_super_cb() stores a raw superblock pointer, but __cifs_get_super() fails to take the active reference until after iterate_supers_type() has dropped the s_umou...

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 ...

EUVD-2026-86868

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...