CVE-2026-64395
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ksmbd: require source read access for duplicate extents
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| eb817368f50c1cbe1bd07044124aad7db6330e3a | affected | git | 2d2ab6983620c2d60ce7db72133984ca3873b929 | Unavailable | None listed |
| eb817368f50c1cbe1bd07044124aad7db6330e3a | affected | git | 67bdad9cf01b25030e3bf00bbce6c309319d6663 | Unavailable | None listed |
| eb817368f50c1cbe1bd07044124aad7db6330e3a | affected | git | b0d4d5cb846a1ddb7aaab9adfb5986e4540e6e5f | Unavailable | None listed |
| eb817368f50c1cbe1bd07044124aad7db6330e3a | affected | git | db231af842868268839f9f9619c68cb27830d8be | Unavailable | None listed |
| eb817368f50c1cbe1bd07044124aad7db6330e3a | affected | git | a10942af27832c2761d020863a46e79bebe0567d | Unavailable | None listed |
| eb817368f50c1cbe1bd07044124aad7db6330e3a | affected | git | cedff600f1642aa982178503552f0d007bc829c8 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.15 | Unavailable | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.96 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.39 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.4 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |