CVE-2026-64141

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in compareguidkey sessionfdcheck walks the per-inode moplist during durable-handle session teardown and sets op-conn = NULL for every opinfo whose conn matched the closing session's connection...

CVE-2026-64140

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in procshowfiles When a SMB2 client opens a file with a durable v2 handle and then issues SMB2 SESSIONLOGOFF, sessionfdcheck clears fp-tcon = NULL on the reconnectable file pointer but leaves t...

CVE-2026-64136 smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()

In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tccount increment in smb2findsmbsesstconunlocked Commit 96c4af418586 "cifs: Fix locking usage for tcon fields" refactored cifs code to change cifstcpseslock for tclock around tccount changes. There was missin...

CVE-2026-64136

In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tccount increment in smb2findsmbsesstconunlocked Commit 96c4af418586 "cifs: Fix locking usage for tcon fields" refactored cifs code to change cifstcpseslock for tclock around tccount changes. There was missin...

CVE-2026-64136

CVE-2026-64136 fixes a race condition in the Linux kernel SMB client (CIFS) by adding the missing lock around tc_count in smb2_find_smb_sess_tcon_unlocked(). The root cause was refactoring that altered locking for tc_lock/tcon fields, leaving tc_count increment without synchronization. The patch ...

CVE-2026-64136 smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()

In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tccount increment in smb2findsmbsesstconunlocked Commit 96c4af418586 "cifs: Fix locking usage for tcon fields" refactored cifs code to change cifstcpseslock for tclock around tccount changes. There was missin...

CVE-2026-64119

CVE-2026-64119 affects the Linux kernel L2TP subsystem. A local unprivileged user can pin the host CPU indefinitely by racing L2TP_CMD_SESSION_GET on L2TP_ATTR_IFNAME with L2TP_CMD_SESSION_CREATE/DELETE on the same tunnel, under CAP_NET_ADMIN. The root cause is list_del_init() in l2tp_session_unh...

EUVD-2026-45804

In the Linux kernel, the following vulnerability has been resolved: l2tp: use listdelrcu in l2tpsessionunhash An unprivileged local user can pin a host CPU indefinitely in l2tpsessiongetbyifname by issuing L2TPCMDSESSIONGET on L2TPATTRIFNAME concurrently with L2TPCMDSESSIONCREATE and...

CVE-2026-64119 l2tp: use list_del_rcu in l2tp_session_unhash

In the Linux kernel, the following vulnerability has been resolved: l2tp: use listdelrcu in l2tpsessionunhash An unprivileged local user can pin a host CPU indefinitely in l2tpsessiongetbyifname by issuing L2TPCMDSESSIONGET on L2TPATTRIFNAME concurrently with L2TPCMDSESSIONCREATE and...

CVE-2026-64119 l2tp: use list_del_rcu in l2tp_session_unhash

In the Linux kernel, the following vulnerability has been resolved: l2tp: use listdelrcu in l2tpsessionunhash An unprivileged local user can pin a host CPU indefinitely in l2tpsessiongetbyifname by issuing L2TPCMDSESSIONGET on L2TPATTRIFNAME concurrently with L2TPCMDSESSIONCREATE and...

CVE-2026-64119

In the Linux kernel, the following vulnerability has been resolved: l2tp: use listdelrcu in l2tpsessionunhash An unprivileged local user can pin a host CPU indefinitely in l2tpsessiongetbyifname by issuing L2TPCMDSESSIONGET on L2TPATTRIFNAME concurrently with L2TPCMDSESSIONCREATE and...

CVE-2026-64119

In the Linux kernel, the following vulnerability has been resolved: l2tp: use listdelrcu in l2tpsessionunhash An unprivileged local user can pin a host CPU indefinitely in l2tpsessiongetbyifname by issuing L2TPCMDSESSIONGET on L2TPATTRIFNAME concurrently with L2TPCMDSESSIONCREATE and...

CVE-2026-64016 ksmbd: fix durable reconnect error path file lifetime

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable reconnect error path file lifetime After a durable reconnect succeeds, ksmbdreopendurablefd republishes the same ksmbdfile into the session volatile-id table. If smb2open then takes a later error path, cleanup...

EUVD-2026-45589

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable reconnect error path file lifetime After a durable reconnect succeeds, ksmbdreopendurablefd republishes the same ksmbdfile into the session volatile-id table. If smb2open then takes a later error path, cleanup...

CVE-2026-64016

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable reconnect error path file lifetime After a durable reconnect succeeds, ksmbdreopendurablefd republishes the same ksmbdfile into the session volatile-id table. If smb2open then takes a later error path, cleanup...

CVE-2026-64016

CVE-2026-64016 : In the Linux kernel, the ksmbd durable reconnect path could mismanage file objects when a later error path occurred after a successful durable reconnect. Specifically, ksmbd_reopen_durable_fd() republished the same ksmbd_file into the session volatile-id table, and if smb2_open()...

CVE-2026-64016 ksmbd: fix durable reconnect error path file lifetime

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable reconnect error path file lifetime After a durable reconnect succeeds, ksmbdreopendurablefd republishes the same ksmbdfile into the session volatile-id table. If smb2open then takes a later error path, cleanup...

EUVD-2026-45691

In the Linux kernel, the following vulnerability has been resolved: l2tp: use refcountincnotzero in l2tpsessiongetbyifname A reader in l2tpsessiongetbyifname can return a pointer to a session whose refcount has reached zero. The getter takes its reference with plain refcountinc, but every other...

CVE-2026-63918

CVE-2026-63918 documents a Linux kernel fix: l2tp_session_get_by_ifname previously used refcount_inc() while other getters used refcount_inc_not_zero(), risking use-after-free if a race during RC/Rcu grace period allowed a zero refcount. The change normalizes the getter to refcount_inc_not_zero()...

CVE-2026-63918

In the Linux kernel, the following vulnerability has been resolved: l2tp: use refcountincnotzero in l2tpsessiongetbyifname A reader in l2tpsessiongetbyifname can return a pointer to a session whose refcount has reached zero. The getter takes its reference with plain refcountinc, but every other...