SB20240711202 - Input validation error in Linux kernel ksmbd
Published: July 11, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240711202
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) Input validation error (CVE-ID: CVE-2023-52442)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the lookup_chann_list(), smb2_get_ksmbd_tcon(), smb2_allocate_rsp_buf() and smb2_check_user_session() 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/017d85c94f02090a87f4a473dbe0d6ee0da72693
- https://git.kernel.org/stable/c/becb5191d1d5fdfca0198a2e37457bbbf4fe266f
- https://git.kernel.org/stable/c/4c2b350b2e269e3fd17bbfa42de1b42775b777ac
- https://git.kernel.org/stable/c/3df0411e132ee74a87aa13142dfd2b190275332e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.145
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.53
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5