SB20241022107 - Improper locking in Linux kernel smb client
Published: October 22, 2024 Updated: May 12, 2025
Security Bulletin ID
SB20241022107
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-2024-50047)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the SMB2_negotiate() function in fs/smb/client/smb2pdu.c, within the smb2_get_enc_key(), crypt_message(), smb3_init_transform_rq() and decrypt_raw_data() functions in fs/smb/client/smb2ops.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/0809fb86ad13b29e1d6d491364fc7ea4fb545995
- https://git.kernel.org/stable/c/538c26d9bf70c90edc460d18c81008a4e555925a
- https://git.kernel.org/stable/c/b0abcd65ec545701b8793e12bc27dc98042b151a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.237
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.181
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.128
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.57