SB2025072928 - Use-after-free in Linux kernel smb client
Published: July 29, 2025
Security Bulletin ID
SB2025072928
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-2025-38488)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the crypt_message() function in fs/smb/client/smb2ops.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/15a0a5de49507062bc3be4014a403d8cea5533de
- https://git.kernel.org/stable/c/2a76bc2b24ed889a689fb1c9015307bf16aafb5b
- https://git.kernel.org/stable/c/8ac90f6824fc44d2e55a82503ddfc95defb19ae0
- https://git.kernel.org/stable/c/9a1d3e8d40f151c2d5a5f40c410e6e433f62f438
- https://git.kernel.org/stable/c/b220bed63330c0e1733dc06ea8e75d5b9962b6b6