CVE-2025-39943
CRITICAL severity · CVSS 9.4 · Out-of-bounds read
9.4CVSS CRITICAL
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactLow
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/5282491fc49d5614ac6ddcd012e5743eecb6a67c ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/5282491fc49d5614ac6ddcd012e5743eecb6a67cPatch
- https://git.kernel.org/stable/c/529b121b00a6ee3c88fb3c01b443b2b81f686d48Patch
- https://git.kernel.org/stable/c/773fddf976d282ef059c36c575ddb81567acd6bcPatch
- https://git.kernel.org/stable/c/8be498fcbd5b07272f560b45981d4b9e5a2ad885Patch
- https://git.kernel.org/stable/c/bdaab5c6538e250a9654127e688ecbbeb6f771d5Patch
- https://git.kernel.org/stable/c/eb0378dde086363046ed3d7db7f126fc3f76fd70Patch