SB20240608217 - Improper locking in Linux kernel ksmbd
Published: June 8, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240608217
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2023-52666)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the smb2_set_ea(), smb2_open() and smb2_set_info_file() functions in fs/ksmbd/smb2pdu.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/5349fd419e4f685d609c85b781f2b70f0fb14848
- https://git.kernel.org/stable/c/e61fc656ceeaec65f19a92f0ffbeb562b7941e8d
- https://git.kernel.org/stable/c/e9ec6665de8f706b4f4133b87b2bd02a159ec57b
- https://git.kernel.org/stable/c/ecfd93955994ecc2a1308f5ee4bd90c7fca9a8c6
- https://git.kernel.org/stable/c/6fc0a265e1b932e5e97a038f99e29400a93baad0
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.149
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.76
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8