CVE-2025-22041

The CVE-2025-22041 issue affects the Linux kernel ksmbd subsystem. In multichannel mode, a use-after-free can occur in ksmbd_sessions_deregister() when a second channel creates a session via the first channel’s connection, causing a freed session in the global session table to be dereferenced via...

CVE-2025-22041

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdsessionsderegister In multichannel mode, UAF issue can occur in sessionderegister when the second channel sets up a session through the connection of the first channel. session that is freed...

CVE-2025-22040 ksmbd: fix session use-after-free in multichannel connection

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbdsessionsderegister. The session can be freed before the connection is added to channel list of session. This...

CVE-2025-22040

CVE-2025-22040 affects the Linux kernel ksmbd multichannel path. A race between session setup and ksmbd_sessions_deregister can free a session before its connection is added to the session’s channel list. The fix adds a reference-count check before freeing the session. Documented impact is high (...

CVE-2025-22040 ksmbd: fix session use-after-free in multichannel connection

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbdsessionsderegister. The session can be freed before the connection is added to channel list of session. This...

CVE-2025-22040 ksmbd: fix session use-after-free in multichannel connection

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbdsessionsderegister. The session can be freed before the connection is added to channel list of session. This...

CVE-2025-22040

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbdsessionsderegister. The session can be freed before the connection is added to channel list of session. This...

CVE-2025-22039

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smbcheckpermdacl and...

CVE-2025-22038 ksmbd: validate zero num_subauth before sub_auth is accessed

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero numsubauth before subauth is accessed Access psid-subauthpsid-numsubauth - 1 without checking if numsubauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure numsubauth !...

CVE-2025-22038 ksmbd: validate zero num_subauth before sub_auth is accessed

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero numsubauth before subauth is accessed Access psid-subauthpsid-numsubauth - 1 without checking if numsubauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure numsubauth !...

CVE-2025-22038

CVE-2025-22038 concerns the Linux kernel, specifically the ksmbd path. The issue arises when accessing psid->sub_auth[psid->num_subauth - 1] without ensuring num_subauth is non-zero, which can cause an out-of-bounds read. The provided description states the patch adds a validation step to r...

CVE-2025-22039 ksmbd: fix overflow in dacloffset bounds check

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smbcheckpermdacl and...

CVE-2025-22038

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero numsubauth before subauth is accessed Access psid-subauthpsid-numsubauth - 1 without checking if numsubauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure numsubauth !...

CVE-2025-22037

CVE-2025-22037 affects the Linux kernel’s ksmbd component. The issue is a null pointer dereference in alloc_preauth_hash triggered when a client sends a malformed SMB2 negotiate request, allowing a subsequent session setup before conn->preauth_info is allocated. A patch introduces KSMBD_SESS_N...

CVE-2025-22037 ksmbd: fix null pointer dereference in alloc_preauth_hash()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in allocpreauthhash The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn-preauthinfo is not...

CVE-2025-22037 ksmbd: fix null pointer dereference in alloc_preauth_hash()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in allocpreauthhash The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn-preauthinfo is not...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a missing ksmbd create lease context boundary check...

PT-2025-16677

Name of the Vulnerable Software and Affected Versions Linux Kernel affected versions not specified Description A null pointer dereference exists in the alloc preauth hash function within the ksmbd module. This occurs when a client sends a malformed SMB2 negotiate request, causing ksmbd to return ...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a ksmbd dacloffset boundary check overflow...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a null pointer dereference when ksmbd is not assigned preauthinfo...