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ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16()
[ Upstream commit a80a486 ] If ->NameOffset of smb2_create_req is smaller than Buffer offset of smb2_create_req, slab-out-of-bounds read can happen from smb2_open. This patch set the minimum value of the name offset to the buffer offset to validate name length of smb2_create_req(). Cc: stable@vger.kernel.org Reported-by: Xuanzhe Yu <yuxuanzhe@outlook.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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