USN-6238-1: Samba vulnerabilities

It was discovered that Samba incorrectly handled Winbind NTLM authentication responses. An attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. CVE-2022-2127 Andreas Schneider discovered that Samba incorrectly enforced SMB2 packet signing. A remote...

SUSE CVE-2023-38429

An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/connection.c in ksmbd has an off-by-one error in memory allocation because of ksmbdsmb2checkmessage that may lead to out-of-bounds access...

UBUNTU-CVE-2023-3347

A vulnerability was found in Samba's SMB2 packet signing mechanism. The SMB2 packet signing is not enforced if an admin configured "server signing = required" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. This flaw allows an attacker to perform attacks, suc...

CVE-2023-3347

A vulnerability was found in Samba's SMB2 packet signing mechanism. The SMB2 packet signing is not enforced if an admin configured "server signing = required" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. This flaw allows an attacker to perform attacks, suc...

SMB2 packet signing not enforced

Description SMB2 packet signing is not enforced if an admin configured "server signing = required" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. SMB2 packet signing is a mechanism that ensures the integrity and authenticity of data exchanged between a clien...

samba -- multiple vulnerabilities

The Samba Team reports: CVE-2023-34967: Samba Spotlight mdssvc RPC Request Type Confusion DoS Vulnerability When parsing Spotlight mdssvc RPC packets, one encoded data structure is a key-value style dictionary where keys are character strings and values can be any of the supported types in the...

Ubuntu 20.04 LTS / 22.04 LTS / 23.04 : Samba vulnerabilities (USN-6238-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6238-1 advisory. It was discovered that Samba incorrectly handled Winbind NTLM authentication responses. An attacker could possibly use this issue to...

CVE-2023-38426

An issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2findcontextvals when createcontext's namelen is larger than the tag length...

AZL-27540 CVE-2023-38432 affecting package kernel for versions less than 5.15.122.1-2

An issue was discovered in the Linux kernel before 6.3.10. fs/smb/server/smb2misc.c in ksmbd does not validate the relationship between the command payload size and the RFC1002 length specification, leading to an out-of-bounds read...

AZL-27401 CVE-2023-32250 affecting package kernel for versions less than 5.15.118.1-1

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 SMB2SESSIONSETUP commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerabilit...

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...

CVE-2023-32257

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 SMB2SESSIONSETUP and SMB2LOGOFF commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage th...

PT-2025-38356

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a use-after-free issue within the smb2 compound op function. This can lead to difficult-to-debug problems. The issue was identified during kernel stress testing...

The vulnerability of the ksmbd module in Linux operating systems allows a hacker to execute arbitrary code.

The vulnerability of the ksmbd module in Linux operating systems is related to synchronization errors when using shared resources. Exploiting this vulnerability allows a remote attacker to execute arbitrary code using the SMB2SESSIONSETUP command...

The vulnerability of the ksmbd module in Linux operating systems allows a hacker to trigger a service failure.

The vulnerability of the ksmbd module in Linux operating systems is related to the improper release of resources. Exploiting this vulnerability allows a remote attacker to cause service failures using the SMB2SESSIONSETUP command...

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-2023-32248

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2TREECONNECT and SMB2QUERYINFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this...

SUSE CVE-2023-32256

A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue...

Linux Kernel ksmbd Session User Object Race Condition Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable. The specific flaw exists within the processing of SMB2QUERYINFO...

Linux Kernel ksmbd Session Setup Memory Leak Denial-of-Service Vulnerability

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable. The specific flaw exists within the handling of...