CVE-2025-37947 Information

Description

In the Linux kernel the following vulnerability has been resolved:

ksmbd: prevent out-of-bounds stream writes by validating pos

ksmbd_vfs_stream_write() did not validate whether the write offset (pos) was within the bounds of the existing stream data length (v_len). If pos was greater than or equal to v_len this could lead to an out-of-bounds memory write.

This patch adds a check to ensure pos is less than v_len before proceeding. If the condition fails -EINVAL is returned.

Reference

https://git.kernel.org/stable/c/04c8a38c60346bb5a7c49b276de7233f703ce9cb https://git.kernel.org/stable/c/0ca6df4f40cf4c32487944aaf48319cb6c25accc https://git.kernel.org/stable/c/7f61da79df86fd140c7768e668ad846bfa7ec8e1 https://git.kernel.org/stable/c/d62ba16563a86aae052f96d270b3b6f78fca154c https://git.kernel.org/stable/c/e6356499fd216ed6343ae0363f4c9303f02c5034