SB2025100413 - Memory leak in Linux kernel smb client
Published: October 4, 2025
Security Bulletin ID
SB2025100413
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) Memory leak (CVE-ID: CVE-2025-39929)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the smbd_negotiate() function in fs/smb/client/smbdirect.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/0991418bf98f191d0c320bd25245fcffa1998c7e
- https://git.kernel.org/stable/c/3d7c075c878ac844e33c43e506c2fa27ac7e9689
- https://git.kernel.org/stable/c/922338efaad63cfe30d459dfc59f9d69ff93ded4
- https://git.kernel.org/stable/c/daac51c7032036a0ca5f1aa419ad1b0471d1c6e0
- https://git.kernel.org/stable/c/e7b7a93879558e77d950f1ff9a6f3daa385b33df