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CVE-2025-39943

ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer

Published: 10/4/2025 Last updated: 5/11/2026 Reserved: 4/16/2025

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.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (4)

Product Vendor Version
Linux Linux V100R001C10B017
Linux Linux V100R001C10B018
Linux Linux Windows 10 Version 1607 for 32-bit Systems
Linux Linux Windows 10 Version 1709 for 32-bit Systems

References (12)