CVE-2023-38431 Information

Description

An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/connection.c in ksmbd does not validate the relationship between the NetBIOS header’s length field and the SMB header sizes via pdu_size in ksmbd_conn_handler_loop leading to an out-of-bounds read.

Reference

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=368ba06881c395f1c9a7ba22203cf8d78b4addc0 https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.8