SB20250502145 - Use-after-free in Linux kernel smb client
Published: May 2, 2025 Updated: May 10, 2025
Security Bulletin ID
SB20250502145
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-37750)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the SMB2_negotiate() function in fs/smb/client/smb2pdu.c, within the decrypt_raw_data() function in fs/smb/client/smb2ops.c, within the cifs_crypto_secmech_release() function in fs/smb/client/cifsencrypt.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/9502dd5c7029902f4a425bf959917a5a9e7c0e50
- https://git.kernel.org/stable/c/950557922c1298464749c216d8763e97faf5d0a6
- https://git.kernel.org/stable/c/aa5a1e4b882964eb79d5b5d1d1e8a1a5efbb1d15
- https://git.kernel.org/stable/c/e859b216d94668bc66330e61be201234f4413d1a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.12