Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
eb817368f50c1cbe1bd07044124aad7db6330e3a to < 2d2ab6983620c2d60ce7db72133984ca3873b929affectedeb817368f50c1cbe1bd07044124aad7db6330e3a to < 67bdad9cf01b25030e3bf00bbce6c309319d6663affectedeb817368f50c1cbe1bd07044124aad7db6330e3a to < b0d4d5cb846a1ddb7aaab9adfb5986e4540e6e5faffectedeb817368f50c1cbe1bd07044124aad7db6330e3a to < db231af842868268839f9f9619c68cb27830d8beaffectedeb817368f50c1cbe1bd07044124aad7db6330e3a to < a10942af27832c2761d020863a46e79bebe0567daffectedeb817368f50c1cbe1bd07044124aad7db6330e3a to < cedff600f1642aa982178503552f0d007bc829c8affected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.96 to ≤ 6.12.*unaffected6.18.39 to ≤ 6.18.*unaffected7.1.4 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
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 ↗