The vulnerabilities of the functions ksmbd_tree_conn_connect(), ksmbd_tree_connect PUT(), and ksmbd_tree_conn_disconnect() in the module fs/smb/server/mgmt/tree_connect.c, as well as the function smb2_tree_disconnect() in the module fs/smb/server/smb2pdu.c, allow attackers to compromise the confidentiality, integrity, and accessibility of protected information within the SMB server framework of the Linux operating system.

The vulnerabilities of the functions ksmbdtreeconnconnect, ksmbdtreeconnect PUT, and ksmbdtreeconndisconnect in the module fs/smb/server/mgmt/treeconnect.c, as well as the function smb2treedisconnect in the module fs/smb/server/smb2pdu.c, are related to the reuse of previously freed memory due to...

Astra Linux – Vulnerability in Linux 5.15

A issue was discovered in ksmbd within the Linux kernel versions 5.15 through 5.19, prior to 5.19.2. The file fs/ksmbd/smb2pdu.c contains a use-after-free condition and an OOPS error related to SMB2TREEDISCONNECT...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013416)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013416 advisory. An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2TREEDISCONNECT. Tenabl...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-010715)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010715 advisory. An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2TREEDISCONNECT. Tenabl...

DEBIAN-CVE-2023-53358

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix racy issue under cocurrent smb2 tree disconnect There is UAF issue under cocurrent smb2 tree disconnect. This patch introduce TREECONNEXPIRE flags for tcon to avoid cocurrent access...

UBUNTU-CVE-2023-53358

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix racy issue under cocurrent smb2 tree disconnect There is UAF issue under cocurrent smb2 tree disconnect. This patch introduce TREECONNEXPIRE flags for tcon to avoid cocurrent access...

AZL-27634 CVE-2023-32254 affecting package hyperv-daemons for versions less than 5.15.145.2-1

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2TREEDISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this...

UBUNTU-CVE-2023-32254

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2TREEDISCONNECT commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this...

SUSE CVE-2022-47939

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2TREEDISCONNECT...

DEBIAN-CVE-2022-47939

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2TREEDISCONNECT...

PT-2022-33936 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions v5.15 through v5.15.60 Description: A use-after-free bug was discovered in the smb2 tree disconnect function. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kernel versions...

PT-2022-5973 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel versions 5.15 through 5.19 before 5.19.2 Description: A use-after-free issue exists in the Linux kernel's ksmbd module, specifically in the fs/ksmbd/smb2pdu.c file, related to the SMB2 TREE DISCONNECT command. This issue can be...