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

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

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

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-2026-63918

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...

CVE-2026-64178

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: Fix UAF read of dev-name bnepaddconnection needs to keep holding the bnepsessionsem while reading dev-name just like bnepgetconnlist does; otherwise the bnepsession thread can concurrently free the netdevice, whi...

CVE-2026-64178 Bluetooth: bnep: Fix UAF read of dev->name

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: Fix UAF read of dev-name bnepaddconnection needs to keep holding the bnepsessionsem while reading dev-name just like bnepgetconnlist does; otherwise the bnepsession thread can concurrently free the netdevice, whi...

EUVD-2026-45863

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: Fix UAF read of dev-name bnepaddconnection needs to keep holding the bnepsessionsem while reading dev-name just like bnepgetconnlist does; otherwise the bnepsession thread can concurrently free the netdevice, whi...

EUVD-2026-45826

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-2026-64141

Summary (CVE-2026-64141) : In the Linux kernel ksmbd component, a remote attacker could trigger a null pointer dereference after negotiating a new SMB2 session with the same ClientGuid and issuing a CREATE with a lease context on a different inode following a durable-handle session teardown. The ...

CVE-2026-64141 ksmbd: fix null pointer dereference in compare_guid_key()

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 ksmbd: fix null pointer dereference in proc_show_files()

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-2026-64140

The CVE-2026-64140 issue affects the Linux kernel’s ksmbd: after a SMB2 session logoff, a reconnectable file pointer may still be present in global_ft.idr. When users read /proc/fs/ksmbd/files, proc_show_files() dereferences fp->tcon->id without NULL checking, causing a null-ptr dereference...

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 ksmbd: fix null pointer dereference in proc_show_files()

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-2026-64141 ksmbd: fix null pointer dereference in compare_guid_key()

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-2026-64141

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

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...