Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ksmbd: require source read access for duplicate extents FSCTL_DUPLICATE_EXTENTS_TO_FILE passes the source file directly to vfs_clone_file_range() or vfs_copy_file_range() without checking the SMB access mask granted to the source handle. A handle opened with attribute access can consequently be used to copy file contents into an attacker-readable destination. Require FILE_READ_DATA on the source handle before either VFS operation, matching other ksmbd data-copy paths.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected eb817368f50c1cbe1bd07044124aad7db6330e3a before 2d2ab6983620c2d60ce7db72133984ca3873b929; affected eb817368f50c1cbe1bd07044124aad7db6330e3a before 67bdad9cf01b25030e3bf00bbce6c309319d6663; affected eb817368f50c1cbe1bd07044124aad7db6330e3a before b0d4d5cb846a1ddb7aaab9adfb5986e4540e6e5f; affected eb817368f50c1cbe1bd07044124aad7db6330e3a before db231af842868268839f9f9619c68cb27830d8be; affected eb817368f50c1cbe1bd07044124aad7db6330e3a before a10942af27832c2761d020863a46e79bebe0567d; affected eb817368f50c1cbe1bd07044124aad7db6330e3a before cedff600f1642aa982178503552f0d007bc829c8 |
| Linux / Linux | affected 5.15; unaffected 0 before 5.15; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.96 through 6.12.*; unaffected 6.18.39 through 6.18.*; unaffected 7.1.4 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/2d2ab6983620c2d60ce7db72133984ca3873b929
- https://git.kernel.org/stable/c/67bdad9cf01b25030e3bf00bbce6c309319d6663
- https://git.kernel.org/stable/c/b0d4d5cb846a1ddb7aaab9adfb5986e4540e6e5f
- https://git.kernel.org/stable/c/db231af842868268839f9f9619c68cb27830d8be
- https://git.kernel.org/stable/c/a10942af27832c2761d020863a46e79bebe0567d
- https://git.kernel.org/stable/c/cedff600f1642aa982178503552f0d007bc829c8