UBUNTU-CVE-2025-71151
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix memory and information leak in smb3_reconfigure() In smb3_reconfigure(), if smb3_sync_session_ctx_passwords() fails, the function returns immediately without freeing and erasing the newly allocated new_password and new_password2. This causes both a memory leak and a potential information leak. Fix this by calling kfree_sensitive() on both password buffers before returning in this error case.
02 / AFFECTED SOFTWARE
Affected packages
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38 explicit affected versions
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34 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix memory and information leak in smb3_reconfigure() In smb3_reconfigure(), if smb3_sync_session_ctx_passwords() fails, the function returns immediately without freeing and erasing the newly allocated new_password and new_password2. This causes both a memory leak and a potential information leak. Fix this by calling kfree_sensitive() on both password buffers before returning in this error case.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/cb6d5aa9c0f10074f1ad056c3e2278ad2cc7ec8d
- https://git.kernel.org/stable/c/5679cc90bb5415801fa29041da0319d9e15d295d
- https://git.kernel.org/stable/c/bb82aaee16907dc4d0b9b0ca7953ceb3edc328c6
- https://git.kernel.org/stable/c/bc390b2737205163e48cc1655f6a0c8cd55b02fc
- https://git.kernel.org/stable/c/cb6d5aa9c0f10074f1ad056c3e2278ad2cc7ec8d
- https://ubuntu.com/security/CVE-2025-71151
- https://ubuntu.com/security/notices/USN-8177-1
- https://ubuntu.com/security/notices/USN-8177-2
- https://ubuntu.com/security/notices/USN-8179-1
- https://ubuntu.com/security/notices/USN-8179-2
- https://ubuntu.com/security/notices/USN-8179-3
- https://ubuntu.com/security/notices/USN-8179-4
- https://ubuntu.com/security/notices/USN-8183-1
- https://ubuntu.com/security/notices/USN-8183-2
- https://ubuntu.com/security/notices/USN-8184-1
- https://ubuntu.com/security/notices/USN-8185-1
- https://ubuntu.com/security/notices/USN-8185-2
- https://ubuntu.com/security/notices/USN-8203-1
- https://ubuntu.com/security/notices/USN-8204-1
- https://ubuntu.com/security/notices/USN-8245-1
- https://ubuntu.com/security/notices/USN-8257-1
- https://ubuntu.com/security/notices/USN-8258-1
- https://ubuntu.com/security/notices/USN-8260-1
- https://ubuntu.com/security/notices/USN-8261-1
- https://ubuntu.com/security/notices/USN-8265-1
- https://ubuntu.com/security/notices/USN-8440-1
- https://www.cve.org/CVERecord?id=CVE-2025-71151