LSN-0118-1 Kernel Live Patch Security Notice

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF in async decryption Doing an async decryption large read crashes with a slab-use-after-free way down in the crypto API. In the Linux kernel, the following vulnerability has been resolved: padata: avoid UAF fo...

ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths

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ROS-20260220-73-0022

A vulnerability in the ksmbdkrb5authenticate function of the ksmbd component of the Linux kernel is related to null pointer dereferencing. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

SUSE CVE-2026-23226

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add channlock to protect ksmbdchannlist xarray ksmbdchannlist xarray lacks synchronization, allowing use-after-free in multi-channel sessions between lookupchannlist and ksmbdchanndel. Adds rwsemaphore channlock to struct...

CVE-2026-23226

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add channlock to protect ksmbdchannlist xarray ksmbdchannlist xarray lacks synchronization, allowing use-after-free in multi-channel sessions between lookupchannlist and ksmbdchanndel. Adds rwsemaphore channlock to struct...

CVE-2026-23228

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix leak of activenumconn in ksmbdtcpnewconnection On kthreadrun failure in ksmbdtcpnewconnection, the transport is freed via freetransport, which does not decrement activenumconn, leaking this counter. Replace...

CVE-2026-23220

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix infinite loop caused by nextsmb2rcvhdroff reset in error paths The problem occurs when a signed request fails smb2 signature verification check. In processrequest, if checksignreq returns an error, setsmb2rspstatuswork...

UBUNTU-CVE-2026-23228

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix leak of activenumconn in ksmbdtcpnewconnection On kthreadrun failure in ksmbdtcpnewconnection, the transport is freed via freetransport, which does not decrement activenumconn, leaking this counter. Replace...

UBUNTU-CVE-2026-23226

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add channlock to protect ksmbdchannlist xarray ksmbdchannlist xarray lacks synchronization, allowing use-after-free in multi-channel sessions between lookupchannlist and ksmbdchanndel. Adds rwsemaphore channlock to struct...

UBUNTU-CVE-2026-23220

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix infinite loop caused by nextsmb2rcvhdroff reset in error paths The problem occurs when a signed request fails smb2 signature verification check. In processrequest, if checksignreq returns an error, setsmb2rspstatuswork...

CVE-2026-23228

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix leak of activenumconn in ksmbdtcpnewconnection On kthreadrun failure in ksmbdtcpnewconnection, the transport is freed via freetransport, which does not decrement activenumconn, leaking this counter. Replace...

CVE-2026-23228 smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix leak of activenumconn in ksmbdtcpnewconnection On kthreadrun failure in ksmbdtcpnewconnection, the transport is freed via freetransport, which does not decrement activenumconn, leaking this counter. Replace...

CVE-2026-23228

The CVE-2026-23228 issue is in the Linux kernel smb server (ksmbd) where, on ksmbd_tcp_new_connection() failure, free_transport() did not decrement active_num_conn, leaking the counter. This occurs in the kthread_run() path during transport cleanup. The documented fix replaces free_transport() wi...

CVE-2026-23226 ksmbd: add chann_lock to protect ksmbd_chann_list xarray

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add channlock to protect ksmbdchannlist xarray ksmbdchannlist xarray lacks synchronization, allowing use-after-free in multi-channel sessions between lookupchannlist and ksmbdchanndel. Adds rwsemaphore channlock to struct...

CVE-2026-23226

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add channlock to protect ksmbdchannlist xarray ksmbdchannlist xarray lacks synchronization, allowing use-after-free in multi-channel sessions between lookupchannlist and ksmbdchanndel. Adds rwsemaphore channlock to struct...

CVE-2026-23226

CVE-2026-23226 involves a kernel vulnerability in ksmbd where the ksmbd_chann_list xarray was lacking synchronization, allowing a use-after-free in multi-channel sessions between lookup_chann_list() and ksmbd_chann_del. The provided documents confirm the root cause and the fix: the patch adds a n...

CVE-2026-23226

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add channlock to protect ksmbdchannlist xarray ksmbdchannlist xarray lacks synchronization, allowing use-after-free in multi-channel sessions between lookupchannlist and ksmbdchanndel. Adds rwsemaphore channlock to struct...

CVE-2026-23226 ksmbd: add chann_lock to protect ksmbd_chann_list xarray

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add channlock to protect ksmbdchannlist xarray ksmbdchannlist xarray lacks synchronization, allowing use-after-free in multi-channel sessions between lookupchannlist and ksmbdchanndel. Adds rwsemaphore channlock to struct...

CVE-2026-23220

CVE-2026-23220 – Linux kernel ksmbd infinite loop fix : In ksmbd, when a signed SMB2 request fails verification, __process_request() triggers an error path that calls set_smb2_rsp_status() and resets next_smb2_rcv_hdr_off to zero. This loses the pointer to the next command in the chain, so is_cha...

CVE-2026-23220 ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix infinite loop caused by nextsmb2rcvhdroff reset in error paths The problem occurs when a signed request fails smb2 signature verification check. In processrequest, if checksignreq returns an error, setsmb2rspstatuswork...